Upper Gastrointestinal Bleeding (UGIB) Treatment & Management

Updated: Aug 12, 2019
  • Author: Bennie Ray Upchurch, III, MD, FACP, AGAF, FACG, FASGE; Chief Editor: BS Anand, MD  more...
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Treatment

Approach Considerations

The goal of medical therapy in upper gastrointestinal (GI) bleeding (UGIB) is to correct shock and coagulation abnormalities and to stabilize the patient so that further evaluation and treatment can proceed. In addition to intravenous (IV) fluids, patients may need transfusion of packed red blood cells. High doses of proton pump inhibitors (PPIs) may reduce the need for endoscopic therapy (see Treatment with proton pump inhibitors).

Various methodologies have been proposed to quantitate rebleeding risk (eg, Rockall score, Baylor score), with several instruments gaining more widespread acceptance. [40] The Blatchford score (range 0-23) in particular can reliably triage patients with presumed UGIB, to hospital discharge for outpatient management with a score of 0, representing a less than 1% chance of requiring intervention, [105] rather than inpatient admission and performance of endoscopy.

The 2008 Scottish Intercollegiate Guidelines Network (SIGN) guideline on the management of acute upper and lower GI bleeding recommends that an initial (pre-endoscopic) Rockall score be calculated for all patients presenting with an acute UGIB. In patients with an initial Rockall score >0, endoscopy is recommended for a full assessment of bleeding risk. [35]

Resuscitation of a hemodynamically unstable patient begins with assessing and addressing the "ABCs" (ie, airway, breathing, circulation) of initial management. (Baradarian et al demonstrated that early, aggressive resuscitation can reduce mortality in acute UGIB. [41] )

Patients presenting with severe blood loss and hemorrhagic shock present with mental status changes and confusion. In such circumstances, patients cannot protect their airway, especially when hematemesis is present. In these cases, patients are at an increased risk for aspiration, which is a potentially avoidable complication that can significantly affect morbidity and mortality. This situation must be recognized early, and patients should be electively intubated in a controlled setting. A multidisciplinary approach, with pulmonologists or intensivists in an intensive care unit (ICU) setting is desirable. Some centers have a dedicated GI bleeding team that utilizes treatment protocols beginning from the emergency department, progressing to the acute-care bed, assuring a controlled setting for endoscopy and delivering optimized in-hospital and postdischarge care.

Intravenous access must be obtained. Bilateral, 16-gauge (minimum), upper extremity, peripheral intravenous lines are adequate for volume resuscitative efforts. Poiseuille’s law states that the rate of flow through a tube is proportional to the fourth power of the radius of the cannula and is inversely related to its length. [22] Thus, short, large-bore, peripheral intravenous lines are adequate for rapid fluid infusion. The 2008 SIGN guideline indicates either colloid or crystalloid solutions may be used to attain volume restoration prior to administering blood products. [35]

There are remarkably few data on optimal fluid resuscitation pathways or algorithms, and very often the approach is based on the patient’s clinical presentation. The choice of fluids, infusion rates, and various in points are largely individual or institutionally driven.

A study published by Kaplan et al indicated that skin temperature on physical examination in combination with serum bicarbonate levels correlated well with the level of systemic perfusion. [42]  Foley catheter placement is helpful to allow a continuous evaluation of the urinary output as a guide to renal perfusion.

Patients with severe coexisting medical illnesses, such as cardiovascular and pulmonary diseases, may require pulmonary artery catheter insertion to closely monitor hemodynamic cardiac performance profiles during the early resuscitative phase.

After the ABCs have been addressed, assess the patient's response to resuscitation, based on evidence of end organ perfusion and oxygen delivery.

Consultation with a surgeon should be considered for all patients with GI hemorrhage. Depending on the patient’s comorbidities, subspecialty consultation is often needed and mirrors the trend in healthcare toward a multidisciplinary team approach.

Once the maneuvers to resuscitate are underway, it is often very helpful to insert a nasogastric tube and perform an aspirate and lavage procedure. This should be the first procedure performed to determine whether the GI bleeding is emanating from above or below the ligament of Treitz. If the stomach contains bile but no blood, UGIB is less likely. If the aspirate reveals clear gastric fluid, a duodenal site of bleeding may still be possible.

In a retrospective review of 1190 patients, Luk et al found that positive nasogastric-tube aspirate findings were 93% predictive of an upper GI source of bleeding. [43]

According to a study performed by the American Society for Gastrointestinal Endoscopy (ASGE), however, a nasogastric-tube aspirate finding can be negative even in the setting of a large duodenal bleeding ulcer. The study compared nasogastric-tube aspirate findings with endoscopic findings of the bleeding source. [26] The investigation revealed that 15.9% of patients with a clear nasogastric-tube aspirate, 29.9% of patients with coffee-ground aspirate, and 48.2% of patients with red blood aspirate had an active upper GI source of bleeding at the time of endoscopy.

A study correlated mortality with the color of the fluid from the nasogastric-tube aspirate and the color of the stool. [2] As shown in the following table, the color of the nasogastric-tube aspirate can be a prognostic indicator.

Table 4. Effect of the Color of the Nasogastric Aspirate and of the Stool on UGIB Mortality Rate (Open Table in a new window)

Nasogastric Aspirate Color

Stool Color

Mortality, %

Clear

Brown or red

6

Coffee-ground

Brown or black

8.2

Red

19.1

Red blood

Black

12.3

Brown

19.4

Red

28.7

UGIB = upper gastrointestinal bleeding.

See Pediatric Gastrointestinal Bleeding for more information on this topic.

Surgery

Primary surgical intervention should be considered in patients with a perforated viscus (eg, from perforated duodenal ulcer, perforated gastric ulcer, or Boerhaave syndrome). In patients who are poor operative candidates, conservative treatment with nasogastric suction and broad-spectrum antibiotics can be instituted. Endoscopic clipping or sewing techniques have also been used in such patients.

Emergency surgery in UBIG typically entails oversewing the bleeding vessel in the stomach or duodenum (usually preoperatively identified by endoscopy), vagotomy with pyloroplasty, or partial gastrectomy. Angiographic obliteration of the bleeding vessel is often considered a favorable modality in patients who are poor surgical candidates. (See Angiography.)

Treatment-related contraindications and precautions

Contraindications to upper endoscopy include an uncooperative or obtunded patient, severe cardiac decompensation, acute myocardial infarction (unless active, life-threatening hemorrhage is present), and perforated viscus (eg, esophagus, stomach, intestine). Expert subspecialty consultation may be beneficial to optimize the patient and establish a best “window of opportunity” should endoscopy proceed.

Contraindications to emergency surgery include impaired cardiopulmonary status and bleeding diathesis.

Esophagogastroduodenoscopy (EGD) may be more difficult or impossible if the patient has had previous oropharyngeal surgery or radiation therapy to the oropharynx. Altered upper GI tract anatomy from previous surgery (eg, Roux-en-Y gastric bypass) may pose unique challenges to endoscopic management of bleeding.

The presence of a Zenker diverticulum can make intubation of the esophagus more difficult.

Patients with Down syndrome are more sensitive to conscious sedation and, when possible, should be monitored by an anesthesiologist and/or intubated prophylactically prior to the procedure. Monitored anesthesia care has been increasingly used in more challenging and sometimes prolonged cases such as EGD for active UGIB.

Hypotension may be exacerbated by sedation; therefore, patients who are clinically unstable should be carefully sedated. Continuous monitoring in the ICU is warranted and monitored anesthesia care by an anesthesia provider may improve the safety of endoscopy, particularly if there is decompensation or compromise of the airway.

Patients with massive bleeding should be considered for intubation to reduce the increased risk of aspiration. Such patients should be treated in an intensive care setting. As suggested, subspecialty consultation with a pulmonologist or an intensivist may be prudent, and sedation might be best managed with the subspecialists in attendance. Anesthesia assistance should be considered even with intubated patients depending on patients' comorbidities and overall stability.

Ideally, the patient should be stabilized prior to endoscopy and abnormalities in coagulation should be corrected. When this is not possible, the judgment of an experienced endoscopist is vital. The merits of the multidisciplinary team approach in critically ill patients cannot be overemphasized.

Next:

Proton-Pump Inhibitors

The relative efficacy of proton-pump inhibitors (PPIs) may be due to their superior ability to maintain a gastric pH at a level above 6.0, thereby protecting an ulcer clot from fibrinolysis. [44]  Current guidelines recommend a regimen of an intravenous (IV) PPI 80-mg bolus, followed by a continuous infusion of 8 mg/hour for 72 hours. [86, 182, 184, 183, 185]

Lau et al demonstrated that high-dose IV omeprazole can accelerate the resolution of the stigmata of recent hemorrhage and reduce the need for endoscopic therapy. [45] Barkun et al showed this therapy to be cost-effective. [46] Laine et al demonstrated that high-dose IV lansoprazole, as well as orally administered high-dose lansoprazole, can maintain the intragastric pH above 6. [47]

A meta-analysis of 24 randomized controlled trials that evaluated PPIs for bleeding ulcers (with or without endoscopic therapy) found a significant reduction in the risk of rebleeding, the need for repeat endoscopic hemostasis, and surgery. An improvement in mortality was also seen in Asian trials and in patients with active bleeding or nonbleeding visible vessels. [48]

A systematic review of six randomized trials comprising 2223 patients to assess the use of a PPI before endoscopic evaluation found that pre-endoscopy PPI therapy did not significantly reduce mortality, rebleeding, or the requirement for surgery. [121] However, there was a significantly lower proportion of peptic ulcers with high-risk stigmata at endoscopy and significantly lower rates of endoscopic treatment.

The 2010 international consensus guidelines on upper gastrointestinal (GI) bleeding (UGIB) recommended the use of IV PPIs in all patients with high-risk lesions post endoscopic therapy; PPI therapy might downgrade the lesion if given pre-endoscopy. [62]

Standard daily-dose oral PPIs may be used in patients who do not have active bleeding or other high-risk stigmata for recurrent bleeding (eg, a visible vessel, adherent clots); in such patients, the risk of recurrent bleeding is low. [115] The goal of treatment in these patients (following resuscitation) should be directed at healing the ulcers and at eliminating precipitating factors (eg, H pylori, nonsteroidal anti-inflammatory drugs [NSAIDs]).

When possible, it is important to take biopsy samples to test for H pylori at the initial endoscopy procedure. Because starting high-dose IV PPI therapy is the mainstay of initial management in UGIB, it is difficult to obtain the initial endoscopic biopsies without the presence of ongoing proton-pump inhibition. It is not well understood whether short-duration proton-pump inhibition alters the sensitivity of biopsies for H pylori. Biopsy specimens should be histologically evaluated when the rapid urease test is negative. [35]

A combined analysis of five studies that evaluated oral dosing with PPI (with or without endoscopic therapy) found a significant reduction in the risk of rebleeding and surgery. [50]

NOTE:  Patients with liver cirrhosis may have an increased mortality if treated with PPIs. [124, 190]

PPIs in patients taking antiplatelet or anticoagulant therapy

Standard dose PPI therapy is advised for gastroprotection in all patients on antiplatelet therapy who are at increased risk of GI bleeding (age >65 years or concomitant use of corticosteroids or anticoagulants or history of peptic ulcer). International normalized ratio (INR) monitoring is required when starting or stopping PPI therapy in users of vitamin K antagonists.

No demonstrated interaction exists between PPIs and the novel oral anticoagulants. Based on a documented efficacy, antiplatelet therapy (aspirin < 300 mg/daily, ticlopidine 100 mg/daily, clopidogrel 75 mg/daily) is widely used for both primary and secondary prevention of cardiovascular and cerebrovascular ischemic events. [125, 126] However, antiplatelet drugs may cause adverse GI events (gastroduodenal ulcerations/erosions, overt bleeding, occult bleeding, and rare perforation), with a definite probability of death, particularly in the elderly. Therefore, gastroprotection is advised in those patients at increased GI risk during antiplatelet therapy.

Increased risk factors include age 65 years and older, concurrent use of steroid/anticoagulant therapy, or a history of peptic ulcer disease. The presence of relevant comorbidities (heart failure, renal impairment, stroke, diabetes, ongoing malignancy) and tobacco use are additional risk factors for both GI events and related mortality. Standard PPI dosing is the most effective gastroprotective therapy.

PPI therapy is not effective in preventing bleeding lesions induced by antiplatelet drugs in either the small intestine or the colon.

Anticoagulants, either vitamin K antagonists or novel oral anticoagulants (NOACs) (including dabigatran, rivaroxaban, and apixaban), do not cause gastroduodenal mucosa injury in and of themselves. These agents may, however, facilitate bleeding of preexisting peptic ulcers. Although gastroprotection with a PPI is currently routinely recommended, unless a concomitant antiplatelet or nonsteroidal anti-inflammatory drug (NSAID) therapy is prescribed, data exist that show PPI cotherapy is associated with reduced risk of warfarin-related UGIB. [127]

In patients under acid suppression because of gastroprotection for any acid-related disease, intensified INR monitoring is recommended because PPIs may potentiate vitamin K antagonist-induced anticoagulation, most likely due to facilitated gastric absorption of warfarin. [128]

Previous
Next:

Therapeutic Endoscopy

For several decades, endoscopy has been the primary method of evaluating and managing upper gastrointestinal (GI) bleeding (UGIB). [129]

Several observational studies, randomized clinical trials, and meta-analyses have demonstrated and supported the idea that early endoscopic hemostatic therapy significantly reduces the rates of recurrent bleeding, the need for emergent surgery, and mortality in patients with acute nonvariceal UGIB. This effect has been more evident in higher-risk patients. [106, 115, 130, 131, 132, 133]

Challenges, such as increasing patient age and comorbidity, the extremely effective antithrombotic or anticoagulant agents, and significant side-effect concerns of the most effective therapeutic agents for ulcer disease, have fortunately been balanced with various endoscopic technological developments and dissemination of evidence-based treatment pathways. Yet the mortality from peptic ulcer bleeding has changed very minimally over this time. [97, 134]

Three significant technological advances have been developed: (1) endoscopic application of Doppler probes to evaluate arteries in the ulcer base, (2) endoscopic application of hemostatic powders, and (3) over-the-scope clips, with enhanced capability over the standard endoclips.

Aside from ulcer hemorrhaging, other causes of GI bleeding, including mucosal tears in the esophagus or upper stomach due to vomiting (Mallory-Weiss tears), venous blebs, and vascular ectasias, can also be treated with endoscopic coagulation.

The bleeding from gastric cancers and ulcers in leiomyomas does not usually respond to endoscopic therapy; surgical or radiologic intervention is needed.

Much debate has focused on the significance of the nonbleeding visible vessel (ie, color, size, diagnostic characteristics, risk of rebleeding) in ulcer hemorrhage. These matters became clarified after the characteristics and significance of the visible vessel in the ulcer crater were defined and the evidence for endoscopic therapy was established, demonstrating that patients requiring therapy to control bleeding or rebleeding could be diagnosed and treated at the time of the upper endoscopy.

The use of Doppler probes to evaluate the arterial flow in the base of ulcers to assess for the rebleeding risk and adequacy of hemostasis may prove to be more accurate than the visual assessment of bleeding stigmata.

Patients should be considered for upper endoscopy if blood loss from the upper GI tract is suspected.

The patient should undergo upper endoscopy prior to any operative intervention in order to diagnose and localize the bleeding site. Most patients (85%-90%) respond to endoscopic therapy.

During the endoscopy, the patient is monitored according to the analgesia and sedation guidelines formulated by the American Society of Anesthesiology. The characteristics of the bleeding lesion are noted, and appropriate therapy is applied when necessary for high-risk lesions or active bleeding.

Urgent endoscopy

Urgent endoscopy is indicated when patients present with hematemesis, melena, or postural changes in blood pressure. Studies have demonstrated a lower rate of rebleeding and shorter length of stay when endoscopy was performed within 24 hours of admission. [43, 51] However, observational studies have not shown a benefit in clinical outcomes when endoscopy was performed within 2 to 12 hours of presentation. [107, 108]

Early endoscopy

Cooper et al studied the effectiveness of performing an early endoscopy within the first 24 hours of an acute UGIB episode and found it to be associated with reductions in the length of hospital stay, rate of recurrent bleeding, and the need for emergent surgical intervention. [51]

According to the 2010 international consensus on nonvariceal UGIB, early endoscopy (within 24 hours of presentation) is appropriate for most patients with UGIB. [52] In a retrospective review involving more than 30,000 cases, Yavorski et al showed that the mortality rates were more than twice as high in patients who did not undergo an early endoscopic procedure than for those who did undergo the procedure early on (11.1% vs 5.2%, respectively). [9] More recent data also suggest endoscopy within 24 hours may have more favorable outcomes. [106, 130]

Studies on the effectiveness of endoscopy on weekends or off-hours have inconsistently shown poorer outcomes. [135, 136]

Endoscopic techniques

There are several currently widely accepted hemostatic treatment options. These include injection of epinephrine and tissue adhesives such as cyanoacrylate, ablative therapy with contact modalities such as thermal coagulation with heater probe and bipolar hemostatic forceps, noncontact modalities such as hemostatic power sprays and argon plasma coagulation, and mechanical hemostasis with band ligation, endoscopic hemoclips, and over-the-scope clips.

The following endoscopic techniques have been developed for achieving hemostasis [10] :

  • Injection of epinephrine or sclerosants
  • Bipolar electrocoagulation
  • Band ligation [53]
  • Heater probe coagulation
  • Constant probe pressure tamponade
  • Bipolar/soft coagulation hemostatic forceps
  • Argon plasma coagulator (APC)
  • Laser photocoagulation
  • Rubber band ligation
  • Application of hemostatic materials, including biologic glue and tissue adhesives
  • Application of hemoclips/endoclips or over-the-scope clips
  • Application of hemostatic powder/spray [54]
  • Doppler ultrasonographic assessment, pre- and postendotherapy

Treatment using a combination of endoscopic therapies has become more common. For example, injection therapy can be applied first to better clarify the bleeding site with at least partial hemostasis, especially in the actively bleeding patient, followed by the application of heater probe or bipolar (gold) probe coagulation with coaptation for definitive hemostatic management. Injection therapy can also be performed prior to endoscopic placement of hemoclips.

According to the 2008 Scottish Intercollegiate Guidelines Network (SIGN) guideline, combinations of endoscopy with an injection of at least 13 mL of 1:10,000 adrenaline, coupled with either a thermal or mechanical treatment, are more effective than single modalities. [35]

The 2010 international consensus guidelines on UGIB recommended the use of endoscopic clips or thermal therapy for high-risk lesions. [52]

Heater probe coagulation

The heater probe consists of a resistor electrode enveloped by a titanium capsule and covered by Teflon (to reduce sticking to the mucosa by the probe). The probe temperature rises to 250°C (482°F).

Bipolar electrocoagulation

The bipolar probe consists of alternating bands of electrodes producing an electrical field that heats the mucosa and the vessel. The electrodes are coated with gold to reduce adhesiveness. The probes are stiff in order to allow adequate pressure to be applied to the vessel to appose the walls and thus produce coaptive coagulation when the electrical-field energy is transmitted. Careful technique is required to heat-seal the perforated vessel.

Injection therapy

Injection therapy involves the use of several different solutions injected into and around the bleeding lesion. Solutions available for injection include epinephrine, sclerosants, and various clot-producing materials, such as fibrin and cyanoacrylate glues.

The epinephrine used for injection is diluted (1:10,000) and injected as 0.5- to 1-mL aliquots. Debate continues over whether the hemostatic effect of epinephrine is due to induced vessel vasoconstriction and subsequent platelet aggregation or to the tamponade effect produced by injecting the volume of drug into the tissue surrounding the bleeding lesion.

Epinephrine injection is often used to reduce the volume of bleeding so that the lesion can be better localized and then treated with a coaptive technique (ie, heater probe, gold probe).

Combining epinephrine injections with human thrombin (600-1000 IU) reduces the risk of bleeding. [6]

Although the epinephrine administered in injection therapy is absorbed into the systemic circulation, this does not appear to have any adverse effects on the hemodynamic status.

Injecting a volume of sterile isotonic sodium chloride solution and providing a tamponade effect also leads to hemostasis, although not as effectively as does epinephrine. [6]

The sclerosant solutions such as ethanol, polidocanol, and sodium tetradecyl sulfate are not frequently administered relative to the use of other available techniques for hemostasis in nonvariceal GI bleeding. Band ligation of esophageal varices is currently used more commonly than sclerosants.

The sclerosants create hemostasis by inducing thrombosis, tissue necrosis, and inflammation at the site of injection. When large volumes are injected, the area of tissue necrosis can produce an increased risk of local complications, such as perforation. [137] Combining the various agents into a single injection has not been shown to be more beneficial than a single-agent therapy alone. [6]

The use of fibrin glue in injection therapy has been shown to be successful, with results similar to those of epinephrine injections. [55]

Cyanoacrylate is effective in achieving hemostasis, with success rates similar to that of hemoclips. [138, 139]

Laser therapy

Laser phototherapy is a noncontact thermal method that uses an Nd:YAG (neodymium-doped yttrium aluminium garnet) laser to create hemostasis by generating heat and direct vessel coagulation. It is not as effective as coaptive coagulation, because it lacks the use of compression to create a tamponade effect. [6] An additional deterrent to its use is expense. Laser therapy has largely been replaced with other endoscopic hemostatic methods.

Hemostatic clips and endoclips

Hemostatic clips are widely available and used in the United States.

With careful placement of the clip, closing the defect in the vessel is possible. Often, depending on the lesion and progress to affect hemostasis, multiple clips are applied. Typically, they become detached and pass from the GI tract within 2 weeks. Hemostatic clips are considered magnetic resonance imaging (MRI)-conditional because they are metallic, and they can serve as radiopaque markers to direct the interventional radiologist during angiography to the relevant area if endoscopy fails to achieve adequate hemostasis. These clips vary in their size and strength. Numerous manufacturers have produced hemostatic clips, with the most significant advancements being the ability to rotate for accurate placement and the ability to reopen and reapply when necessary.

There are substantial data documenting the efficacy of hemoclips, which is similar to that of thermal coagulation methods. [19, 141]

One report, concerning 113 patients with major stigmata of ulcer hemorrhage, found no difference between the use of hemoclips and photocoagulation with regard to hemostasis, 30-day mortality, and the need for emergency surgery. [56] Patients randomized to the endoclip group had significantly lower rebleeding rates (2% vs 21%). However, only 60% of active bleeders were successfully treated with the heater probe, a rate much lower than in previous reports.

A study of 80 patients found a higher rate of control of initial bleeding with the heater probe compared with the Olympus endoclip (100% vs 85%). [57] Rebleeding rates were not significantly different.

No significant differences in procedure duration, initial hemostasis, or rebleeding rates were found in a study of 47 patients comparing combination therapy with epinephrine injection plus monopolar electrocoagulation versus hemoclips. [58]

There are some clinical settings in which endoclips may be preferred over other hemostatic methods. These include the treatment of ulcers in patients who are coagulopathic or who require ongoing anticoagulation; in such patients, electrocoagulation will increase the size, depth, and healing time of treated lesions. Endoclips may also be preferable in the retreatment of lesions that rebleed after initial thermal hemostasis. Finally, some endoscopists, including this author, may choose endoclips as their method of choice for hemostasis to avoid the potential for tissue destruction altogether, thus allowing a potentially safer setting to use any method of choice if repeat endoscopy for hemostasis is required.

Ulcers on the lesser curvature, the posterior duodenum, or the cardia increase the difficulty of clip deployment and clip failure rates.

Larger endoclips, such as the over-the-scope clips, have advantages over smaller hemoclips for the hemostasis of chronic ulcers, fibrotic lesions, and the closure of larger lesions. However, the use of the over-the-scope clips can be cumbersome in upper GI bleeding and, therefore, these clips have been more commonly used in refractory bleeding or as a salvage maneuver, but there are data showing efficacy of these clips as a primary modality. [142, 143]

Argon plasma coagulation

APC is a technique in which a stream of electrons flows along a stream of argon gas. The coagulation is similar to monopolar cautery, with the current flow going from a point of high current density (the point of contact of the gas with the mucosa) to an area of low current density (the conductive pad on the patient's body). The current flows through the body in an erratic path to the pad.

This monopolar cautery technique is similar to the laser technique in that energy is delivered to the vessel for coagulation with apposition of the vessel walls. This technique was found not to be effective for visible vessels larger than 1 mm, owing to the limited depth of burn. Small, superficial vessels such as arteriovenous malformations, telangiectasias, and particularly gastric antral vascular ectasia (GAVE) respond well to treatment by APC.

Hemostatic powder/spray

Hemostatic powders are a novel technique. Thus, data are available data, but no randomized controlled trials evaluating this technique have been conducted yet. [144] These agents have primarily been used as a second-line option when other endoscopic hemostasis techniques have failed. In a literature review of several reported cases, a hemostatic powder spray (Hemospray) was successfully used for hemostasis in 88.5% of 234 cases of UGIB. [145]

The hemosprays have the advantage of excellent initial hemostasis, but they can also obscure the endoscopic views of the underlying lesion. Intuitively, as a purely topical agent, hemosprays would not have the durability of mechanical clips or thermal coactive techniques.

In a retrospective study (2013-2017) that evaluated the effectiveness of a hemospray (Hemospray) for managing diffuse or refractory UGIB in 52 patients treated for peptic ulcer bleeding (n = 18), postinterventional bleeding (n = 13), or other UGIB (n = 21), there was 100% efficacy without adverse effects related to therapy, with immediate hemostasis in 51 patients. [146] Twenty-two patients (43.1%) had recurrent bleeding within 3 days, with a 56.9% overall clinical success, and 25 patients had recurrent bleeding within 7 days (49%), with a 51% overall clinical success. In total, eight patients died (15.4%), two of which were related to bleeding (3.8%). Thus, although these findings indicate a high technical success of the hemospray for treating diffuse or refractory UGIB, the investigators acknowledge there was a high rebleeding risk and further investigation is needed. [146]

Doppler ultrasonographic probes

There is increasing use of Doppler ultrasonographic probe-guided lesion assessment to detect significant arterial flow in the vessel at the ulcer base, thanks to the development of relatively low cost, easy-to-use Doppler units and disposable endoscopic probes. [139, 147] Two studies have shown Doppler probe assessment is more accurate than classic endoscopic scoring of stigmata in the base of ulcers, at predicting rebleeding risk. [148, 149]

Endoscopic treatment decisions

The choice of treatment modality is influenced by the size of the vessel. Animal studies have demonstrated that the heater probe and bipolar probe are effective for vessels as large as 2 mm in diameter.

Other techniques (eg, clips, band ligation) or a combination of techniques are needed for larger vessels or vessels that are not approachable by the heater probe or bipolar probe. (Surgical intervention should be considered when dealing with vessels larger than 2 mm in diameter, discounting an enlargement due to the development of a pseudoaneurysm.) The over-the-scope clips are able to grasp larger areas and apply more mechanical force to larger vessels, making them an option when standard endoclips may not suffice.

It is important to remember when planning endoscopic therapy for a large vessel, that the 7-French heater probe or gold probe catheter can traverse the accessory channel of a standard adult upper endoscope, but a therapeutic endoscope with a larger accessory channel is necessary to pass a 10-French thermal probe.

Ulcers with an overlying clot

In the patient who has an ulcer with an overlying clot, attempting to remove the clot by target washing is critical to allow treatment of the underlying stigmata if appropriate. Endoscopic removal of the clot by washing or cold snare has been demonstrated to be effective in reducing the recurrence of bleeding. [59]

The findings under the clot (eg, bleeding vessel, visible vessel, clean base, examples of which are seen in the images below) help to determine the therapy needed and to improve efficacy by allowing treatment to be applied directly to the vessel. (See also the table below.)

Upper gastrointestinal bleeding (UGIB). Ulcer with Upper gastrointestinal bleeding (UGIB). Ulcer with active bleeding.
Upper gastrointestinal bleeding (UGIB). Ulcer with Upper gastrointestinal bleeding (UGIB). Ulcer with a clean base.
Upper gastrointestinal bleeding (UGIB). Diagram of Upper gastrointestinal bleeding (UGIB). Diagram of an ulcer with a clean base.
Upper gastrointestinal bleeding (UGIB). Ulcer with Upper gastrointestinal bleeding (UGIB). Ulcer with an overlying clot.
Upper gastrointestinal bleeding (UGIB). Ulcer with Upper gastrointestinal bleeding (UGIB). Ulcer with a visible vessel.
Upper gastrointestinal bleeding (UGIB). Diagram of Upper gastrointestinal bleeding (UGIB). Diagram of an ulcer with a visible vessel.

Table 5. Ulcer Characteristics and Correlations (Open Table in a new window)

Ulcer Characteristics

Prevalence Rate, %

Rebleeding Rate, %

Surgery Rate, %

Mortality, %

Clean base

42

5

0.5

2

Flat spot

20

10

6

3

Adherent clot

17

22

10

7

Visible vessel

17

43

34

11

Active bleeding

18

55

35

11

If the clot cannot be removed by washing, then using a cold snare can be effective in dislodging and removing the clot.

Vigorous washing of the clot formed after therapy is useful in determining the adequacy of coagulation. A combination of injection with heater probe or bipolar coaptive coagulation is often used and has been shown to be more effective in patients with active bleeding.

The patient is monitored under the protocol for conscious sedation, also called analgesia and sedation (ie, per the American Society of Anesthesiologists [ASA] and the American Society for Gastrointestinal Endoscopy [ASGE] guidelines). In selected cases, monitored anesthesia care has become the preferred option for sedation and endoscopy.

Active bleeding and rebleeding

Attempting to control active bleeding using the recommended techniques with the appropriate equipment or instituting appropriate therapy for a high-risk lesion is important. The large-channel therapeutic endoscope should be used so that the 10-French thermal probe can be employed for adequate coaptation.

Endoscopists should use the technique with which they have the most familiarity. The endoscopy should not be started unless the endoscopist is equipped for any potential lesions (eg, ulcer, varix, angioectasia, tear, tumor). The patient should be monitored for recurrent bleeding and treated a second time if appropriate. A surgical consultation should be considered for all patients with GI hemorrhage. Subspecialty consultation for multidisciplinary management should be considered, particularly in severe active bleeding.

Rebleeding occurs in 10%-30% of endoscopically treated patients. [35]

Second-look endoscopy

A second attempt at endoscopic control is warranted if the initial endoscopy fails to control the bleeding. Some authorities have concerns about the perils of a second esophagogastroduodenoscopy (EGD), which may result in delayed surgery, perforation, and increased morbidity and mortality. However, this approach has been validated in a large, randomized, controlled trial that showed decreased morbidity and mortality. [62]

Owing to the relatively high rebleeding rate associated with ulcers, some clinicians advocate scheduled second-look endoscopy, with the intent of identifying and proactively managing persistent or recurrent bleeding. This would be a strategy directed at individuals who are very likely to benefit from a second invasive procedure; however, no current guidelines recommend this strategy. A systematic review and meta-analysis of randomized trials assessing otucomes of second-look endoscopy reported a small but significant reduction in rebleeding in patients undergoing the procedure (P< 0.01) but no significant benefit in reducing surgery or death. [150]

In a prospective multicenter study that evaluated the efficacy of scheduled second-look endoscopy (24-36 hours after initial hemostasis) in 319 patients with endoscopically confirmed bleeding peptic ulcer treated unsucessfully with hemoclip application, thermal coagulation, and/or epinephrine injection, investigators found noninferiority of single endoscopy relative to second-look endoscopy for rate of rebleeding (P = 0.132). [151] Independent risk factors for rebleeding included endoscopists’ estimation of poorer success of the initial hemostasis, a patient history of NSAID use, and higher transfusion requirement (4 units of red blood cells). Thus, the researchers concluded that repeat endoscopy may only be beneficial in patients with less-than-satisfactory initial hemostasis at endoscopy, an NSAIDs history, or higher transfusion requirement. [151]

Specific characteristics at endoscopy can predict rebleeding. Rebleeding occurs in 55% of patients who have active bleeding (pulsatile, oozing), in 43% who have a nonbleeding visible vessel, in 22% who have an ulcer with an adherent clot, and in 0-5% who have an ulcer with a clean base.

At endoscopy, the prevalence rate for a clean base is 42%, for a flat spot is 20%, for an adherent clot is 17%, for a visible vessel is 17%, and for active bleeding is 18%. See the images below.

Upper gastrointestinal bleeding (UGIB). Diagram of Upper gastrointestinal bleeding (UGIB). Diagram of an ulcer with a clean base.
Upper gastrointestinal bleeding (UGIB). Ulcer with Upper gastrointestinal bleeding (UGIB). Ulcer with a visible vessel.

Freeman et al have described a pale, visible vessel that appears to have a very high risk for rebleeding. [60] This must be differentiated from the presence of a clean ulcer base.

Good visualization is important. The uncleared fundal pool may obscure an ulcer, mucosal tear, gastric varices, portal gastropathy, or tumor (eg, leiomyoma, adenocarcinoma, lymphoma). Endoscopic therapy is recommended for ulcers at increased risk for rebleeding.

Using a combination of techniques is prudent when re-treating the ulcer site because the first therapy may have produced necrosis and weakening of the intestinal wall. Ulcers on the anterior surface of the stomach and duodenum are at an increased risk for perforation. Using injection as the first step increases the thickness of the submucosal layer, thus providing an extra margin of safety.

Even operative techniques can have a significant rebleeding rate with significant mortality, as noted in the study of Poxon et al. In this investigation, the rebleeding rate was 10% (80% mortality for rebleeders) in patients who underwent a conservative surgical technique in which the ulcer base was undersewn. [61] This more conservative approach was compared with the standard surgical technique (ie, vagotomy and pyloroplasty or partial gastrectomy). The comparison of the conservative approach with a standard gastrectomy resulted in similar mortality rates, ie, 26% versus 19%, respectively, with no rebleeding after partial gastrectomy.

Postendoscopic monitoring

Postoperatively, the patient is monitored for recovery from conscious sedation or receives monitored anesthesia care after endoscopy and from general anesthesia after abdominal surgery. Observe and follow the patient's mental status, vital signs, chest, cardiac, and abdominal findings to ascertain that the patient's clinical status has stabilized and that no complications (eg, aspiration, perforation, recurrent bleeding, myocardial infarction due to hypotension) have occurred. Monitor the hemoglobin level.

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Bleeding Peptic Ulcer Treatment

Upper gastrointestinal (GI) endoscopy is the most effective diagnostic tool for peptic ulcer disease and has become the method of choice for controlling active ulcer hemorrhage. Failure of endoscopy to maintain hemostasis is one of the indications to initiate surgical intervention, especially in high-risk patients.

In a randomized, prospective trial that included 92 patients with recurrent peptic ulcer bleeding after initial endoscopic therapy for hemostasis, patients who underwent a second endoscopic attempt to control bleeding were found to have decreased transfusion requirements, 30-day mortality rates, and duration of intensive care unit (ICU) stay in comparison with the surgical group. [62]

With the exception of a patient in shock who has a life-threatening recurrent hemorrhage, this study supports attempting another trial of endoscopy to control a bleeding ulcer.

Regardless of the endoscopic therapy, however, 10%-12% of patients with acute ulcerous hemorrhage require an operation as the definitive procedure to control the bleeding ulcer. In most circumstances, the operation is performed emergently, and the associated mortality rate is as high as 15%-25%.

Medical therapy used in conjunction with endoscopy involves proton-pump inhibitor (PPI) administration. PPIs decrease the rebleeding rates in patients with bleeding ulcers associated with an overlying clot or visible, nonbleeding vessel in the base of the ulcer. [63, 64] Consider transcatheter angiographic embolization in patients who are poor surgical candidates. Because of the extensive collateral circulation of the upper GI tract, ischemic complications are rare.

Surgical treatment

If two attempts at endoscopic control of the bleeding vessel are unsuccessful, avoid further attempts (ie, because of increased complication risks and mortality) and pursue surgical intervention. The indications for surgery in patients with bleeding peptic ulcers are as follows:

  • Severe, life-threatening hemorrhage not responsive to resuscitative efforts
  • Failure of medical therapy and endoscopic hemostasis with persistent recurrent bleeding
  • A coexisting reason for surgery, such as perforation, obstruction, or malignancy
  • Prolonged bleeding, with loss of 50% or more of the patient's blood volume
  • A second hospitalization for peptic ulcer hemorrhage

The operative treatment options for a bleeding duodenal ulcer historically include vagotomy, gastric resection, and drainage procedures. Each specific operative option is associated with its own incidence of ulcer recurrence, postgastrectomy syndrome, and mortality. When making an intraoperative judgment on how to best manage the bleeding ulcer, it is extremely important for the surgeon to be aware of these differences. [16]

The three most common operations performed for a bleeding duodenal ulcer are as follows [10] :

  • Truncal vagotomy and pyloroplasty with suture ligation of the bleeding ulcer
  • Truncal vagotomy and antrectomy with resection or suture ligation of the bleeding ulcer
  • Proximal (highly selective) gastric vagotomy with duodenostomy and suture ligation of the bleeding ulcer

The purpose of the vagotomy is to divide the nerves to the acid-producing body and fundus of the stomach. This inhibits acid production that occurs during the cephalic phase of gastric secretion, thereby decreasing the risk for recurrent ulceration.

In addition to having the same effects as a highly selective vagotomy in the proximal stomach, a truncal vagotomy also has marked effects on distal gastric motor function. It weakens distal gastric peristalsis, thus requiring the creation of a pyloroplasty to decrease the resistance to outflow from the stomach. Proximal vagotomy abolishes gastric receptive relaxation and impairs storage in the proximal stomach. As a result, a more rapid gastric emptying of liquids occurs. A drainage procedure is not required, because the innervation of the antrum and pylorus is still intact. Consequently, the gastric emptying of solid food is not altered. The antropyloric mechanism still functions normally and continues to prevent duodenogastric reflux.

Truncal vagotomy and suture ligation of a bleeding ulcer is a frequently used operation for treating upper GI bleeding in elderly patients with life-threatening hemorrhage and shock. The procedure can be performed rapidly, minimizing the time spent in the operating room under general anesthesia.

Much of what is now known about the operations performed for bleeding duodenal ulcers came from the era before the etiologic role for H pylori and nonsteroid anti-inflammatory drugs (NSAIDs) in the development of peptic ulcers was understood. Reducing gastric acidity has been proven to be beneficial, with lower rebleeding rates when using high-dose omeprazole. [6] Although PPIs seem to have an advantage, they have no effect on mortality.

The diagnosis of H pylori infection is important in the management of patients with a complicated bleeding peptic ulcer. If a patient with a bleeding ulcer requires surgery, then knowledge of the patient's H pylori status becomes pertinent, because it may help guide the decision to choose a particular surgical procedure (eg, simply oversewing the ulcer as opposed to performing an antiulcer operation).

Many studies support the decision to manage the bleeding ulcer in conjunction with eradication of H pylori.

The 2008 Scottish Intercollegiate Guidelines Network (SIGN) guideline recommends testing for H pylori in patients with peptic ulcer bleeding. Eradication therapy should be prescribed for those who test positive for an active infection. In those who take NSAIDs, maintenance antisecretory therapy should consist of daily PPI for prevention of recurrent ulceration after successful healing of the ulcer and H pylori eradication, if the NSAIDs cannot be discontinued. [35, 120, 152]

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Bleeding Gastric Ulcer Treatment

The surgical management of bleeding gastric ulcers is slightly different from that of duodenal ulcers, but the concepts are identical. The three most common complications of a gastric ulcer that mandate emergent surgical intervention are hemorrhage, perforation, and obstruction. The goals of surgery are to correct the underlying emergent problem, prevent recurrent bleeding or ulceration, and exclude malignancy.

A bleeding gastric ulcer is most commonly managed by a distal gastrectomy that includes the ulcer, with a gastroduodenostomy or a gastrojejunostomy reconstruction.

The common operations for the management of a bleeding gastric ulcer include (1) truncal vagotomy and pyloroplasty with a wedge resection of the ulcer, (2) antrectomy with wedge excision of the proximal ulcer, (3) distal gastrectomy to include the ulcer, with or without truncal vagotomy, and (4) wedge resection of the ulcer only.

Types of gastric ulcers

The choice of operation for a bleeding gastric ulcer depends on the location of the ulcer and the hemodynamic stability of the patient to withstand an operation. Five types of gastric ulcers occur, based on their location and acid-secretory status.

Type 1 gastric ulcers are located on the lesser curvature of the stomach, at or near the incisura angularis. These ulcers are not associated with a hypersecretory acid state.

Type 2 ulcers represent a combination of 2 ulcers that are associated with a hypersecretory acid state. The ulcer locations occur in the body of the stomach in the region of the incisura. The second ulcer occurs in the duodenum.

Type 3 ulcers are prepyloric ulcers. They are associated with high acid output and are usually within 3 cm of the pylorus.

Type 4 ulcers are located high on the lesser curvature of the stomach and (as with type 1 ulcers) are not associated with high acid output.

Type 5 ulcers are related to the ingestion of NSAIDs or aspirin. These ulcers can occur anywhere in the stomach.

Surgical management according to ulcer type

A vagotomy is added to manage type 2 or type 3 gastric ulcers.

Patients who are hemodynamically stable but have intermittent bleeding requiring blood transfusions should undergo a truncal vagotomy and distal gastric resection to include the ulcer for types 1, 2, and 3 ulcers.

In patients who present with life-threatening hemorrhage and a type 1, 2, or 3 ulcer, biopsy and oversew or excision of the ulcer in combination with a truncal vagotomy and a drainage procedure should be considered.

Patients with type 4 ulcers usually present with hemorrhage. The left gastric artery should be ligated, and a biopsy should be performed on the ulcer. Then, the ulcer should be oversewn through a high gastrotomy.

Rebleeding rates for the procedures that keep the ulcer in situ range from 20% to 40%. [16]

Gastric bleeding in the immediate postoperative period from recurrent peptic ulcer disease is initially best managed by endoscopic or angiographic means. If reoperation is required, gastric resection is usually indicated, because a repeat vagotomy is not reliable and a more definitive solution is warranted.

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Stress Ulcer Treatment

Knowledge of the predisposing conditions for stress ulceration allows the clinician to identify patients at risk for developing stress ulceration and gastrointestinal (GI) bleeding—respiratory failure with mechanical ventilation and coagulopathy being very prominent risk factors. Treatment in this group of high-risk patients should focus on prevention. This is best accomplished by treating the underlying causes of ulceration.

Aggressive support of hemodynamic parameters ensures adequate mucosal blood flow. In addition, several strategies have evolved to treat gastric luminal acidity.

Stress-related bleeding usually occurs 7-10 days after the initial insult but may manifest sooner. Initially, endoscopy is the most important diagnostic tool. The acute superficial erosions are multiple, begin in the fundus, and progress toward the antrum. Ninety percent of patients stop bleeding with conservative medical therapy that includes gastric acid–controlling medications to maintain the gastric luminal pH above 5.0. [18]

PPIs are the drugs of choice for acid suppression in stress ulcer prophylaxis (SUP). The risk of bleeding in an intensive care unit (ICU) is reduced by some 60% in patients receiving SUP compared to those treated with placebo or no prophylaxis. [153]  Current evidence does not substantiate routine prophylaxis. Therefore, withhold SUP in the majority of hospitalized patients, unless they have multiple risk factors and are likely to benefit from preventative strategies. Both cost and potential side effects from unnecessary proton-pump inhibitor (PPI) use can be reduced from following these guidelines. [92, 124]

Endoscopic hemostasis is attempted using traditional techniques, including electrocoagulation, argon plasma coagulation (APC), or injection therapy. Selective angiographic catheterization of the left gastric artery may be attempted with selective infusion of vasopressin (48-72 h) or embolization using Gelfoam, coils, or autologous clot to embolize the left gastric artery. Regardless of the angiographic technique used, it is often unsuccessful because of the rich and extensive submucosal plexus and collateral circulation within the stomach.

Surgical treatment

Surgical intervention becomes necessary if nonoperative therapy fails and blood loss continues. The goals of operative treatment are to control bleeding and to reduce recurrent bleeding and mortality. These patients are at extremely high risk, and the most expeditious procedure is the best option.

Simply oversewing an actively bleeding erosion is sometimes effective enough to control the bleeding. In the setting of life-threatening hemorrhage not amenable to endoscopic control, gastric resection with or without vagotomy with reconstruction may be necessary.

The type of gastric resection depends on the location of the gastric erosions, ie, whether they are proximal or distal. The options are antrectomy and subtotal, near total, or total gastrectomy. Operative mortality rates range from 4% to 17%. [65] The choice of the initial operation must be made with an understanding of the patient's condition, the amount and location of gastric disease, and an accurate assessment of one's technical ability to rapidly and safely perform a gastric resection. The trend has been to perform less surgery in general and to minimalize the type of surgical procedure performed. [66]

Managing the underlying insult causing the gastric stress ulcerations is also important. This involves supportive measures to maintain acceptable hemodynamic parameters, to provide adequate nutritional support in the critically ill patient, and to treat sepsis (if present).

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Mallory-Weiss Syndrome Treatment

Distinguishing Mallory-Weiss syndrome from Boerhaave syndrome is critical. Although both entities share a common pathogenesis, their management is completely different.

Boerhaave syndrome represents a full-thickness transmural laceration with perforation of the esophagus. A Gastrografin swallow helps to confirm the presence of the perforation in most cases, and prompt surgical intervention is necessary to prevent mediastinitis and sepsis.

However, surgical intervention in Mallory-Weiss syndrome is required to achieve hemostasis in only 10% of cases. [18] The bleeding from a Mallory-Weiss tear spontaneously ceases in over 80% of patients by the time endoscopy is performed. [18, 95]

For patients in whom bleeding is visualized at endoscopy, the endoscopic treatment options are electrocoagulation, heater-probe application, hemoclips, epinephrine injection, or sclerotherapy.

In a series published by Bataller et al, hemostasis was achieved in 100% of patients with Mallory-Weiss tears by using endoscopic sclerotherapy with epinephrine (1:10,000) and 1% polidocanol. Other nonoperative therapies are reserved for cases in which endoscopic attempts at creating hemostasis have failed.

Other available options are angiographic intra-arterial infusion of vasopressin and transcatheter embolization of branches of the left gastric artery using Gelfoam. Avoid the balloon tamponade technique using the Sengstaken-Blakemore tube in this particular circumstance, because this apparatus may extend the mucosal laceration into a transmural laceration with perforation. [18]

Surgical intervention is indicated in patients with continued bleeding after failed attempts at nonoperative therapies.

Bleeding from the gastroesophageal junction is visualized through an anterior gastrotomy. Once the tear is localized, the bleeding is controlled by oversewing the lesion.

The overall mortality rates for patients who require emergent surgery is 15%-25%, in contrast to a mortality of 3% or less for patients whose bleeding stops by the time of the initial endoscopy. [18]

See Mallory-Weiss Tear for more information on this topic.

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Dieulafoy Lesion Treatment

The initial endoscopic management of a Dieulafoy lesion can be highly successful. In a report by Norton et al describing their experience with 90 Dieulafoy lesions, endoscopic management achieved primary hemostasis in 96% of cases. [186]  The 30-day mortality was 13%, which is a reflection of the severe comorbid conditions associated with patients who have bleeding from a Dieulafoy lesion. [186]

Contact thermal ablation with a heater probe is a very effective technique, with or without the combined use of epinephrine to slow or stop the bleeding prior to applying the heater probe. Argon plasma coagulation (APC) and endoclips have also been used successfully for hemostasis. No studies have been performed that compare surgical and endoscopic therapy for Dieulafoy lesions.

Although surgical intervention may be required after failed endoscopic therapy, endoscopy is still an important adjunct for management, because a nonbleeding Dieulafoy lesion may be undetectable through a gastrotomy.

Because of this potential problem, a combined endoscopic and surgical approach has been adopted. The vascular malformation can be marked with India ink through the endoscope.

Rebleeding after endoscopic therapy occurs in 11%-15% of cases, with most cases of rebleeding controlled at repeat endoscopy. [21] (Repeat endoscopy in patients who have rebleeding has been validated in controlled studies of endoscopy and surgery.)

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Angiodysplasia Treatment

Bleeding from angiodysplasias can range from occult blood loss to life-threatening hemorrhage. Because the lesions are small and superficial, endoscopic therapy is highly successful. Endoscopic treatments and devices used for hemostasis include argon plasma coagulation (APC), contact heat probes, electrocoagulation, and injection therapy.

The contact probe coagulators have been the most common form of endoscopic treatment because of their proven success and ability to target a bleeding lesion tangentially. Similarly, a noncontact option, APC, is very effective with options of a straight firing, side firing, and circumferential firing probes that result in an increased ease of use with targeting these flat and sometimes broad areas of involvement. APC would be the treatment of choice when treating gastric antral vascular ectasia (GAVE), as it allows the endoscopist to apply prompt and effective “painting” of the angiodysplastic lesions in the distal stomach.

Recurrent bleeding can occur from the mucosal injury caused by the coagulation. To overcome the possibility of a delayed hemorrhage, endoscopic band ligation has been applied for hemostasis in nonvariceal gastrointestinal bleeding, including angiodysplasias. [67]

When endoscopic techniques fail, surgical resection becomes necessary. When pangastric involvement is the source of bleeding, a total gastrectomy may be required; however, this is extremely rare. Available nonsurgical options include angiography with catheter-directed vasopressin. Combined hormonal therapy with estrogen and progesterone for patients in whom the diagnosis is unknown and vascular lesions are suggested has not been demonstrated to be effective.

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Aortoenteric Fistula

Patients with an aortoenteric fistula most often present with a self-limiting sentinel hemorrhage that is then followed by an exsanguinating, massive gastrointestinal (GI) bleed. For the warning lesser sentinel bleed in a patient with a history of an abdominal aortic aneurysm repair or a known aortic aneurysm, the possibility of a graft-enteric fistula should be considered.

An upper endoscopy is the procedure of choice to help diagnose the fistula. It should be performed to the ligament of Treitz. Upper endoscopy findings also help to exclude other sources of upper GI bleeding (UGIB).

Once the diagnosis of aortoenteric fistula is confirmed or seriously considered, emergency surgical intervention is required. In most instances, the aortic graft is removed after debridement and closure of the duodenum, followed by an extra-anatomic vascular bypass in order to bypass the ligated aorta and revascularize the lower extremities.

Perioperative mortality is 22%-75%, [68] and major complications are common. Published opinions state that graft excision is not necessary as long as no gross contamination and purulence are present at the time of laparotomy. [69] Under these circumstances, antibiotics are administered long-term.

Another option in the surgical literature is the use of endovascular stents to repair the fistula. [70, 71] Endovascular stent management is technically feasible and may be used as a bridge to more definitive treatment after hemodynamic stabilization in high-risk surgical patients. Stent grafting controls hemorrhage immediately; however, because the device is placed in an infected field, adjunctive measures, such as long-term antibiotic use, percutaneous drainage, and bowel diversion, may be required. [72]

Although endovascular stents have been shown to be effective in treating aortoenteric fistulas, case reports have described aortoenteric fistulas in patients with abdominal aortic aneurysm treated initially with stent grafts as well. [73]

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Treatment Complications

Complications of endoscopic therapy include aspiration pneumonia and perforation (1% for the first endoscopic therapy, 3% for the second). Bleeding can be caused by drilling into the vessel with contact thermal probes, by perforating the vessel with an injection, or by removing the clot with failure to coagulate the vessel.

Endoscopy is safe and effective in patients who present with upper gastrointestinal (GI) bleeding (UGIB). Careful consideration of the patient’s underlying comorbidities must be used to optimize the performance of endoscopy. As has been stated, mortality in UGIB is most often from the patient’s underlying comorbidities. Therefore, strategies to manage the bleeding episode and in preventing rebleeding need to include the management of the comorbidities. The value of a multidisciplinary team approach in managing these patients is strongly recommended.

The role of therapeutic angiography following failed endoscopic management should be considered as a favorable option to emergency surgery because there are similar success rates with hemostasis but potentially lower morbidity and mortality. (See Angiography)

Complications from emergency abdominal surgery include ileus, sepsis, poor wound healing, and myocardial infarction.

Salvage surgery is associated with a high mortality rate, reflecting the comorbidities of patients who rebleed or continue to bleed.

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Posttreatment Monitoring and Care

The 2010 international consensus guidelines on upper gastrointestinal (GI) bleeding (UGIB) state that selected low-risk patients may be discharged immediately following endoscopy, but high-risk patients should remain hospitalized for at least 72 hours. [52]

According to the 2008 Scottish Intercollegiate Guidelines Network (SIGN) guideline, patients with a post-endoscopic Rockall score of less than 3 have a low risk of rebleeding or death and are candidates for early discharge and outpatient follow up. [35]

More recent international validation of the Glasgow-Blatchford bleed score (GBS) has confirmed that a score of 0 or 1 is associated with a very low risk of intervention and that hospital admission and emergency endoscopy are not required. [101]

The goal is to maintain the intragastric pH above 6 to maintain the clot. This is most easily achieved by intravenous proton pump inhibitor (PPI) therapy. After the acute phase, 72 hours, the coagulated vessel should be stable and the patient can be switched to oral therapy. If the patient rebleeds or has ongoing bleeding, repeat endoscopic therapy is suggested. If this is not successful, interventional radiology is performed to clot the bleeding vessel. If this fails, surgery would be considered.

The greatest risk for perforation is usually within the first 48 hours after endoscopic therapy. In the subsequent 48-72 hours after endoscopic therapy, the patient should receive acid-suppressive therapy to maintain a high gastric pH (above 6). A high gastric pH can be achieved by a continuous infusion of high-dose intravenous PPI therapy.

Tachyphylaxis may develop within 24 hours if H2-receptor antagonists are administered.

Patients who do not require endoscopic therapy and do not have other comorbidities should be considered for discharge.

Patients who did not require endoscopic treatment should receive routine, oral dosing of a PPI, ie, daily dosing prior to breakfast. Whether high-dose intravenous proton-pump inhibitor (PPI) therapy is advantageous in this setting remains controversial.

Oral PPI therapy can be used with any of the oral PPI preparations.

Patients should be tested for H pylori either by histology of gastric biopsy specimens taken on initial upper endoscopy or by other tests of active infection. Serologic testing should be avoided as it cannot be used to diagnose an active infection. If H pylori testing is positive, H pylori therapy should be instituted after the patient has been discharged and is in stable condition. Moreover, H pylori eradication should be confirmed 4-6 weeks later in patients with UGIB. This can be done by checking the stool for the H pylori antigen, or an H pylori breath test. The accuracy of eradication testing is much more reliable 2-4 weeks after the therapy has been completed and the patient has had no further antibiotics or antisecretory therapy. [154, 155]

Data on acid suppression via oral PPI therapy in order to produce a reduction in rebleeding are limited. High-dose intravenous PPI therapy appears to reduce rebleeding, but PPIs are not currently approved by the US Food and Drug Administration (FDA) for such treatment. The patient may be fed after recovery from local and intravenous anesthesia.

Some patients may require further endoscopic therapy. If repeat endoscopic therapy is needed, the stomach will usually empty liquids without residue within 2-3 hours. The 2011 American Society of Anesthesiologists (ASA) guidelines recommend a minimum of 2 hours without oral intake before performing endoscopy. [156]

The 2008 SIGN guideline recommends repeat endoscopy and endotherapy within 24 hours when initial endoscopic treatment is deemed suboptimal or in patients in whom rebleeding will likely be life threatening. [35]

If the patient remains stable, the patient can then be started on therapy for ulcer healing.

The patient should continue oral therapy for ulcer disease noted on endoscopy or for ulcers caused by cautery techniques during endoscopic therapy, only for a duration long enough to heal the ulceration.

Long-term acid suppression to prevent ulcer recurrence or its complications may not be required in patients with low-risk endoscopic findings and should be individualized in those with the need for continued nonsteroidal anti-inflammatory drug (NSAID) use, aspirin or other antiplatelet therapies, or anticoagulation. [75, 115]

Aspirin and NSAID therapies should be avoided in view of their adverse effect on platelet aggregation and ulcer healing. However, according to the 2010 international consensus guidelines, resumption of aspirin therapy in patients who require anticlotting prophylaxis should not be delayed as cardiovascular risks outweigh the risk of rebleeding. [52]

The 2008 SIGN guidelines state that patients with healed bleeding ulcers who are negative for H pylori require concomitant PPI therapy at the usual daily dose if NSAIDs, aspirin, or cyclooxygenase (COX)-2 inhibitors are indicated. [35]

If patients must remain on NSAIDs or low-dose aspirin, secondary prophylaxis against NSAID-induced ulcers should be given. According to the 2010 international consensus guidelines on UGIB, postdischarge use of aspirin or NSAIDs requires cotherapy with a PPI. [52]

The patient's hemoglobin value should be monitored to assess the efficacy of iron therapy as an outpatient; further improvement should be noted. Oral or parenteral iron supplementation to treat posthemorrhagic anemia are both effective options. Erythropoietin analogues have been shown to be effective in increasing the rate of hemoglobin production after ulcer hemorrhage, but they may not have a favorable cost-benefit ratio.

Repeat endoscopy should be done at follow-up in patients with gastric ulcers to document ulcer healing and to exclude cancer. [78]

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Deterrence and Prevention of UGIB

H pylori eradication therapy should be given if H pylori is present in the setting of any history of ulcer disease. Eradication of H pylori has been demonstrated to reduce the risk of recurrent ulcers and, therefore, recurrent ulcer hemorrhages.

Avoid nonsteroidal anti-inflammatory drugs (NSAIDs). If this is not possible, use the lowest dose and duration.

Proton-pump inhibitors (PPIs) or misoprostol cotherapy should be used along with NSAIDs.

The use of cyclooxygenase (COX)-2 inhibitors has been shown to reduce the risk of ulcer hemorrhage, although only when not combined with aspirin therapy. Concerns have been raised about an increase in myocardial infarction and stroke in patients taking selective COX-2 inhibitors. More recent data suggest this may be a risk with all NSAIDs. [157, 158]

As demonstrated in the study by al-Assi et al, the combination of H pylori infection and NSAID use may increase the risk of ulcer hemorrhage. [1]

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