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Acute Mesenteric Ischemia

  • Author: Chat V Dang, MD; Chief Editor: John Geibel, MD, DSc, MSc, MA  more...
 
Updated: Dec 16, 2015
 

Background

Acute mesenteric ischemia (AMI) is a syndrome caused by inadequate blood flow through the mesenteric vessels, resulting in ischemia and eventual gangrene of the bowel wall. Although relatively rare, it is a potentially life-threatening condition.

Broadly, AMI may be classified as either arterial or venous. AMI as arterial disease may be subdivided into nonocclusive mesenteric ischemia (NOMI) and occlusive mesenteric arterial ischemia (OMAI); OMAI may be further subdivided into acute mesenteric arterial embolism (AMAE) and acute mesenteric arterial thrombosis (AMAT). AMI as venous disease takes the form of mesenteric venous thrombosis (MVT). Thus, for practical purposes, AMI comprises four different primary clinical entities, as follows:

  • NOMI
  • AMAE
  • AMAT
  • MVT

The four types of AMI have somewhat different predisposing factors, clinical pictures, and prognoses. A secondary clinical entity of mesenteric ischemia occurs as a consequence of mechanical obstruction (eg, from internal hernia with strangulation, volvulus, or intussusception). Tumor compression, aortic dissection and postangiography thrombosis[1] are other reported causes. Occasionally, blunt trauma may cause isolated dissection of the superior mesenteric artery (SMA) and lead to intestinal infarction.

Because the four types of AMI share similarities and a final common pathway (ie, bowel infarction and death, if not properly treated), they may usefully be discussed together.

In 1930, Cokkinis remarked, “Occlusion of the mesenteric vessels is apt to be regarded as one of those conditions of which the diagnosis is impossible, the prognosis hopeless, and the treatment almost useless.”[2] This quote indicates some of the extreme difficulties faced by physicians treating AMI. Symptoms are nonspecific initially, before evidence of peritonitis presents. Thus, diagnosis and treatment are often delayed until the disease is advanced.[3, 4]

Fortunately, since 1930, many advances (eg, in magnetic resonance imaging [MRI] and Doppler flowmetry[5] ) have been made that allow earlier diagnosis and treatment. Whereas the prognosis remains grave for patients in whom the diagnosis is delayed until bowel infarction has already occurred, patients who receive the appropriate treatment in a timely manner are much more likely to recover.[6]

Treatment options for acute thrombosis focus on surgical methods, which have changed little since the late 20th century. Some patients may be good candidates for percutaneous transluminal angioplasty with stenting.[7, 8, 9, 10, 11, 12] Some authors recommend a trial of thrombolytic therapy if patients can be treated within 8 hours of presentation and do not have signs of bowel necrosis or peritonitis.[13] If no evidence of improvement is noted within 4 hours, patients should undergo exploration.

Because of the high mortality and the difficulty of diagnosis, mesenteric ischemia poses a substantial legal risk. This risk can be reduced by a high degree of clinical suspicion, early and aggressive diagnostic imaging, and early surgical consultation with clear documentation of timing. One review of 180 consecutive malpractice claims found seven cases involving AMI, with allegations of failure to make a timely diagnosis in five, failure to administer anticoagulation in one, and failure to prevent NOMI in one.[14]

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Anatomy

Mastery of the anatomy of the mesenteric vessels is the key to understanding and treating patients with mesenteric ischemia. However, the endless array of vascular variations can make this difficult.

The celiac axis, the SMA, and the inferior mesenteric artery (IMA) supply the foregut, midgut, and hindgut, respectively.[15] The celiac axis arises from the ventral surface of the aorta at the T12-L1 vertebral body. It courses anteroinferiorly before branching into the common hepatic, splenic, and left gastric arteries. The possible variations are too numerous to describe in this article.

The hepatic artery gives off the gastroduodenal artery, which branches further to the right gastroepiploic artery and the anterosuperior and posterosuperior pancreaticoduodenal arteries. The right gastroepiploic artery communicates with the left gastroepiploic artery, which is an immediate branch of the splenic artery. The anterosuperior and posterosuperior pancreaticoduodenal arteries communicate with the corresponding inferior branches from the SMA.

The splenic artery gives off the left gastroepiploic artery, as well as the dorsal pancreatic artery, which supplies the body and tail of the pancreas and communicates with the anterosuperior pancreaticoduodenal and gastroduodenal arteries and sometimes with the middle colic artery or SMA.

The left gastric artery, the third important branch of the celiac axis, communicates with the right gastric artery along the posterior aspect of the lesser curvature of the stomach. The celiac artery supplies most of the blood to the lower esophagus, stomach, duodenum, liver, pancreas, and spleen.

The SMA comes off the ventral aorta and supplies the midgut by giving off the inferior pancreaticoduodenal artery, middle colic, right colic, and jejunal and ileal branches.

The inferior pancreaticoduodenal artery gives rise to the corresponding anteroinferior and posteroinferior branches, which anastomose with their superior counterparts. This communication is an important connection that helps to maintain bowel perfusion in times of atherosclerosis of the mesenteric vessels. (For an illustration of a meandering artery, see the image below.)

Meandering artery (radiographic sign of preexistin Meandering artery (radiographic sign of preexisting bowel ischemia).

The ileocolic artery supplies the ileum, cecum, and ascending colon, whereas the middle colic supplies the transverse colon and communicates with the IMA. The right colic artery typically branches at the same level as the middle colic artery. The right and middle colic arteries are an important supply of blood to the marginal artery of Drummond and give rise to the terminal vasa recta, which provide blood to the colon.

The IMA, the smallest mesenteric vessel, also comes off the anterior aorta. It supplies the distal transverse, descending, and sigmoid colon, as well as the rectum. Many communications to the SMA exist within the mesentery, and rectal branches offer communication between the visceral blood supply and the common supply. The “watershed area” near the splenic flexure was once believed more susceptible to ischemia secondary to poor arterial flow; however, it is now thought that the poor development of this area results in an increased propensity for ischemia.

The venous system, for the most part, parallels the arterial system. The superior mesenteric vein (SMV) is formed by the jejunal, ileal, ileocolic, right colic, and middle colic veins, which drain the small intestine, cecum, ascending colon, and transverse colon. The right gastroepiploic vein drains the stomach to the SMV, whereas the inferior pancreaticoduodenal vein drains the pancreas and duodenum.

The inferior mesenteric vein (IMV) drains the descending colon, the sigmoid colon, and the rectum through the left colic vein, the sigmoid branches, and the superior rectal vein, respectively. The IMV joins the splenic vein, which then joins the SMV to form the portal vein. The portal vein enters the liver.

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Pathophysiology

Insufficient blood perfusion of the small bowel and colon may result from embolic or thrombotic arterial occlusion (AMAE or AMAT), thrombotic venous occlusion (ie, MVT), or nonocclusive processes such as vasospasm or low cardiac output (NOMI).[16, 17, 18] Embolic phenomena account for approximately 50% of all clinical cases, arterial thrombosis for about 25%, NOMI for roughly 20%, and MVT for less than 10%.

Rarely, isolated spontaneous dissections of the SMA have been reported.[19, 20, 21, 22] Whether the occlusion is arterial or venous, hemorrhagic infarction leading to perforation is the common pathologic pathway.

Injury severity is inversely proportional to the mesenteric blood flow and is influenced by the number of vessels involved, systemic mean blood pressure, duration of ischemia, and collateral circulation. The superior mesenteric vessels are involved more frequently than the inferior mesenteric vessels, with blockage of the latter often being silent because of better collateral circulation.

Damage to the affected bowel portion may range from reversible ischemia to transmural infarction with necrosis and perforation. The injury is complicated by reactive vasospasm in the SMA region after the initial occlusion. Arterial insufficiency causes tissue hypoxia, leading to initial bowel wall spasm (see the image below). This leads to gut emptying by vomiting or diarrhea. Mucosal sloughing may cause bleeding into the gastrointestinal (GI) tract.

Radiograph showing bowel spasm (early sign of isch Radiograph showing bowel spasm (early sign of ischemia).

At this stage, little abdominal tenderness is present, producing the classic intense visceral pain that is disproportionate to physical examination findings.

As the ischemia persists, the mucosal barrier becomes disrupted, and bacteria, toxins, and vasoactive substances are released into the systemic circulation (see the image below). This can cause death from septic shock, cardiac failure, or multisystem organ failure before bowel necrosis actually occurs.

Pathologic findings 2 hours after bowel ischemia s Pathologic findings 2 hours after bowel ischemia starts.

As hypoxic damage worsens, the bowel wall becomes edematous and cyanotic. Fluid is released into the peritoneal cavity; this explains the serosanguineous fluid sometimes recovered by diagnostic peritoneal lavage. Bowel necrosis can occur in 8-12 hours from the onset of symptoms (see the image below). Transmural necrosis leads to peritoneal signs and heralds a much worse prognosis.

Microscopic findings 24 hours after ischemia start Microscopic findings 24 hours after ischemia starts.

Acute mesenteric arterial embolism

AMAE (ie, embolic AMI) is usually caused by an embolus of cardiac origin. Typical causes include mural thrombi after myocardial infarction, atrial thrombi associated with mitral stenosis and atrial fibrillation, vegetative endocarditis, mycotic aneurysm, and thrombi formed at the site of atheromatous plaques within the aorta or at the sites of vascular aortic prosthetic grafts interposed anywhere between the heart and the origin of the SMA.

Because the vascular occlusion is sudden, patients have not been able to develop a compensatory increase in collateral flow. As a result, they experience worse ischemia than patients with AMAT. Because of its small takeoff angle from the aorta and higher flow, the SMA is the visceral vessel most susceptible to emboli (see the image below); the IMA is less commonly affected.[23] Most often, emboli lodge about 6-8 cm beyond the arterial origin, at a narrowing near the emergence of the middle colic artery.

Complete aortic occlusion (Leriche syndrome) with Complete aortic occlusion (Leriche syndrome) with acute embolism of superior mesenteric artery.

The US Centers for Disease Control and Prevention (CDC) Injury Center reports a special form of mesenteric ischemia due to systemic air embolism in victims of high-energy blast injuries. These patients sustain severe primary blast injury to the lung, a condition referred to as blast lung.

Acute mesenteric arterial thrombosis

AMAT (ie, thrombotic AMI) is a late complication of preexisting visceral atherosclerosis. Symptoms typically do not develop until two of the three arteries (usually the celiac artery and the SMA) are stenosed or completely blocked.[24] Progressive worsening of the atherosclerotic stenosis before the acute occlusion allows time for development of additional collateral circulation.

A thrombus forms during a state of low flow, resulting in acute cessation of flow to the gut. Bloody stools develop as the more sensitive mucosa dies first. The bowel gradually becomes necrotic (see the image below); subsequently, bacterial overgrowth develops, and the resulting bowel perforation causes sepsis and finally death.

Gross specimen of dead bowel. Gross specimen of dead bowel.

Most patients with AMAT have atherosclerotic disease at other sites (eg, coronary artery disease [CAD], cerebrovascular accident or stroke, or peripheral arterial disease [PAD]). A drop in cardiac output resulting from myocardial infarction (MI) or congestive heart failure (CHF) may cause AMI in a patient with visceral atherosclerosis.

AMAT may also be a complication of arterial aneurysm or other vascular pathologies, such as dissection, trauma, and thromboangiitis obliterans. In inflammatory vascular disease, smaller vessels are affected. Thrombosis tends to occur at the origin of the SMA, causing widespread infarction. These patients frequently present with a history of chronic mesenteric ischemia in the form of intestinal angina before the emergency event.

Nonocclusive mesenteric ischemia

NOMI is precipitated by a severe reduction in mesenteric perfusion, with secondary arterial spasm from such causes as cardiac failure, septic shock, hypovolemia, or the use of potent vasopressors in critically ill patients.[17] Because bowel perfusion, like cerebral perfusion, is preserved in the setting of hypotension, NOMI represents a failure of autoregulation. Many vasoactive drugs (eg, digitalis, cocaine, diuretics, and vasopressin) may also cause regional vasoconstriction.[25] Gross pathologic arterial or venous occlusions are not observed.

Mesenteric venous thrombosis

MVT often (ie, >80% of the time) is the result of some processes that make the patient more likely to form a clot in the mesenteric circulation (ie, secondary MVT). Primary MVT occurs in the absence of any identifiable predisposing factor. MVT may also occur after ligation of the splenic vein for a splenectomy or ligation of the portal vein or the superior mesenteric vein as part of damage control surgery for severe penetrating abdominal injuries. Other associated causes include pancreatitis, sickle cell disease, and hypercoagulability caused by malignancy.

The mechanism responsible for ischemia in this setting is a massive influx of fluid into the bowel wall and lumen, which results in systemic hypovolemia and hemoconcentration. The consequent bowel edema and decreased outflow of blood secondary to venous thrombosis impede the inflow of arterial blood, and this leads to bowel ischemia. Although bowel ischemia is itself detrimental to the patient, it is the resulting multiple organ system failure that actually accounts for the high mortality.

MVT often affects a much younger population. Symptoms may be present longer than in more typical cases of AMI, sometimes for more than 30 days. Infarction from MVT is rarely observed with isolated SMV thrombosis, unless collateral flow in the peripheral arcades or vasa recta is compromised as well. Fluid sequestration and bowel wall edema are more pronounced than in arterial occlusion. The colon is usually spared because of better collateral circulation.

In a study of mortality factors in 31 patients with mesenteric venous thrombosis, Abu-Daff et al determined that 30-day mortality in these patients was strongly linked to colonic involvement in ischemia and to short-bowel syndrome.[26] Lack of anticoagulation also may have been a factor. The 5-year mortality, according to the investigators, was primarily related to short-bowel syndrome.

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Etiology

Acute mesenteric arterial embolism

Causes of AMAE (embolic AMI) include the following[18] :

  • Cardiac emboli - Mural thrombus after myocardial infarction, auricular thrombus associated with mitral stenosis and atrial fibrillation, or septic emboli from valvular endocarditis (less frequent)
  • Emboli from fragments of proximal aortic thrombus due to a ruptured atheromatous plaque
  • Atheromatous plaque dislodged by arterial catheterization or surgery (eg, aortic aneurysm resection)

Most emboli lodge in the SMA, just distal to the origin of the middle colic artery. Embolization is less often associated with ischemic disease than thrombosis and has a better survival rate when optimally treated.

Acute mesenteric arterial thrombosis

Causes of AMAT (thrombotic AMI) include the following:

  • Atherosclerotic vascular disease (most common)
  • Aortic aneurysm
  • Aortic dissection
  • Arteritis
  • Decreased cardiac output from MI or CHF (thrombotic AMI may cause acute decompensation)
  • Dehydration from any cause

Unlike embolic events, which generally occur in arterial branches and result in limited bowel ischemia, thrombosis typically occurs at the vessel’s origin, resulting in extensive bowel involvement.

Nonocclusive mesenteric ischemia

Causes of NOMI include the following:

  • Hypotension from CHF, MI, sepsis, aortic insufficiency, severe liver or renal disease, or recent major cardiac or abdominal surgery
  • Vasopressors
  • Ergotamines
  • Cocaine [27, 28]
  • Digitalis (it is unclear whether digitalis use causes NOMI or whether patients who develop NOMI are older and thus more likely to have been prescribed digitalis)

Case reports have documented celiac artery compression syndrome (CACS) as a cause of mesenteric ischemia through external compression of the celiac artery, usually by the median arcuate ligament or the celiac ganglion.[29, 30] Case reports have also described marathon runners who develop ischemic colitis after a marathon; in most instances, this resolves with supportive treatment.[31]

Mesenteric venous thrombosis

Causes of MVT include the following (>80% of patients with MVT are found to have predisposing conditions):

  • Hypercoagulability [32] from protein C and S deficiency, [33, 34] antithrombin III deficiency, dysfibrinogenemia, abnormal plasminogen, polycythemia vera (most common), thrombocytosis, sickle cell disease, factor V Leiden mutation, pregnancy, and oral contraceptive use [35, 36, 37]
  • Tumor causing venous compression or hypercoagulability (paraneoplastic syndrome)
  • Infection, usually intra-abdominal (eg, appendicitis, diverticulitis, or abscess)
  • Venous congestion from cirrhosis (portal hypertension)
  • Venous trauma from accidents or surgery, [38, 39, 40, 41, 42] especially portacaval surgery
  • Increased intra-abdominal pressure from pneumoperitoneum during laparoscopic surgery [38]
  • Pancreatitis
  • Decompression sickness
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Epidemiology

United States and international statistics

The overall prevalence of AMI is 0.1% of all hospital admissions; this figure may be expected to rise as the population ages. The exact prevalence of MVT is not known, because many cases are presumed to be limited in symptomatology and to resolve spontaneously. It is believed to account for approximately 10-15% of all cases of mesenteric ischemia and for 0.006% of hospital admissions. Venous thrombosis is found in approximately 0.001% of patients who undergo exploratory laparotomy.

Risk factors for AMI include atherosclerosis, arrhythmias, hypovolemia, CHF, recent MI, valvular disease, advanced age, and intra-abdominal malignancy.[43, 44, 45, 46] Mesenteric artery stenosis is found in 17.5% of independent elderly adults.[47] Approximately two thirds of patients are women.

Research indicates that inflammatory bowel disease (IBD) is another risk factor for mesenteric artery thrombosis.[48] In a review comparing 17,487 patients who had either Crohn disease or ulcerative colitis with 69,948 control subjects, the investigators detected a significantly higher risk of AMI in the patients with IBD.[44]

Outside the United States, reported rates of AMI are probably lower in countries with limited diagnostic capability or whose populations have a shorter life expectancy because AMI is primarily a disease of older individuals.

Age-, sex-, and race-related demographics

In large part because of the association with atherosclerosis,[49] AMI is commonly considered a disease of the older population, with the typical age of onset being older than 60 years. Nevertheless, younger people who have atrial fibrillation or risk factors for MVT, such as oral contraceptive use or hypercoagulable states (eg, those caused by protein C or S deficiency), may present with AMI.

No overall sex preference exists for AMI. Men might be at higher risk for occlusive arterial disease because they have a higher incidence of atherosclerosis. Conversely, women who are taking oral contraceptives or are pregnant are at higher risk for MVT.

No racial predilections are known for AMI. However, people of races with a higher rate of conditions leading to atherosclerosis, such as African American people, might be at higher risk.

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Prognosis

Although survival rates for AMI have improved over the past four decades, the prognosis for patients with AMI of any type remains grave.[18] Over the past 15 years, the all-cause mortality from AMI has averaged 71% (range, 59-93%). Once bowel wall infarction has occurred, mortality may be as high as 90%. Even with good treatment, as many as 50-80% of patients die. For those patients who do survive, the risk of rethrombosis is high, and lifestyle may be hindered by a lifetime of total parenteral nutrition as a remedy for short-gut syndrome.

Predictors of mortality have included older age, bandemia, hepatic and renal impairment, hyperamylasemia, metabolic acidosis, hypoxia, intramural pneumatosis, and sepsis.[50] Mortality is highest for AMAT,[51] followed by NOMI, AMAE, and MVT.[52]

Early and aggressive diagnosis and treatment have been shown to reduce mortality substantially if the diagnosis is made before the development of peritonitis.[53] It is essential to act early on clinical suspicion, rather than wait for the arrival of hard evidence. Survivors of extensive bowel resection face significant long-term morbidity because of the reduced intestinal mucosal surface available for absorption. However, with rapid treatment, mortality can be reduced considerably, and patients may be spared bowel resection.

A long-term follow-up study of 31 AMI patients who had surgery and survived the acute episode revealed 2- and 5-year survival rates of 70% and 50%.[54] Deaths were mainly related to cardiovascular comorbidity and malignant disease. With appropriate anticoagulation, only one patient died after a recurrent attack of AMAT.

Early recognition and treatment of NOMI has been shown to reduce mortality to 50-55%.

In a report from Madrid describing 21 patients with SMA embolus, intestinal viability was achieved in 100% of patients if the duration of symptoms was shorter than 12 hours, 56% if the duration was 12-24 hours, and only 18% if the duration was longer than 24 hours.[55] Another study found that even at hospital centers with angiography available 24 hours a day, mortality still was approximately 70%.[56]

MVT is associated with a 30-day mortality of 13-15%. Without anticoagulant therapy, mortality approaches 30%, with a 25% recurrence rate. The combination of anticoagulant therapy with surgery is associated with the lowest recurrence rate (~3-5%). Patients presenting with peritonitis and infarcted bowel have a prolonged and complicated course.

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Patient Education

Patients who survive to discharge should be educated regarding short-bowel syndrome. They should also be instructed about the importance of taking warfarin or other discharge medications to prevent recurrence.

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Contributor Information and Disclosures
Author

Chat V Dang, MD Clinical Professor of Emergency Medicine, Charles Drew University of Medicine and Science; Clinical Professor, Department of Medicine, University of California, Los Angeles, David Geffen School of Medicine

Disclosure: Nothing to disclose.

Coauthor(s)

Mark Su, MD, MPH, FACEP, FACMT Consulting Staff and Director of Fellowship in Medical Toxicology, Department of Emergency Medicine, North Shore University Hospital

Mark Su, MD, MPH, FACEP, FACMT is a member of the following medical societies: American Academy of Clinical Toxicology, American College of Emergency Physicians, American College of Medical Toxicology, Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Daniel K Nishijima, MD, MAS Assistant Professor of Emergency Medicine, Associate Research Director, Department of Emergency Medicine, University of California, Davis, School of Medicine

Daniel K Nishijima, MD, MAS is a member of the following medical societies: American Academy of Emergency Medicine, American College of Emergency Physicians, Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Chief Editor

John Geibel, MD, DSc, MSc, MA Vice Chair and Professor, Department of Surgery, Section of Gastrointestinal Medicine, and Department of Cellular and Molecular Physiology, Yale University School of Medicine; Director, Surgical Research, Department of Surgery, Yale-New Haven Hospital; American Gastroenterological Association Fellow

John Geibel, MD, DSc, MSc, MA is a member of the following medical societies: American Gastroenterological Association, American Physiological Society, American Society of Nephrology, Association for Academic Surgery, International Society of Nephrology, New York Academy of Sciences, Society for Surgery of the Alimentary Tract

Disclosure: Received royalty from AMGEN for consulting; Received ownership interest from Ardelyx for consulting.

Acknowledgements

David FM Brown, MD Associate Professor, Division of Emergency Medicine, Harvard Medical School; Vice Chair, Department of Emergency Medicine, Massachusetts General Hospital

David FM Brown, MD is a member of the following medical societies: American College of Emergency Physicians and Society for Academic Emergency Medicine

Disclosure: lippincott Royalty textbook royalty; wiley Royalty textbook royalty

Burt Cagir, MD, FACS Assistant Professor of Surgery, State University of New York Upstate Medical University; Consulting Staff, Director of Surgical Research, Robert Packer Hospital; Associate Program Director, Department of Surgery, Guthrie Clinic

Burt Cagir, MD, FACS is a member of the following medical societies: American College of Surgeons, American Medical Association, Association of Program Directors in Surgery, and Society for Surgery of the Alimentary Tract

Disclosure: Nothing to disclose.

Brian James Daley, MD, MBA, FACS, FCCP, CNSC Professor and Program Director, Department of Surgery, Chief, Division of Trauma and Critical Care, University of Tennessee Health Science Center College of Medicine

Brian James Daley, MD, MBA, FACS, FCCP, CNSC is a member of the following medical societies: American Association for the Surgery of Trauma, American College of Chest Physicians, American College of Surgeons, American Medical Association, Association for Academic Surgery, Association for Surgical Education, Eastern Association for the Surgery of Trauma, Shock Society, Society of Critical Care Medicine, Southeastern Surgical Congress, Southern Surgical Association, andTennessee Medical Association

Disclosure: Nothing to disclose.

Michael A Grosso, MD Consulting Staff, Department of Cardiothoracic Surgery, St Francis Hospital

Michael A Grosso, MD is a member of the following medical societies: American College of Surgeons, Society of Thoracic Surgeons, and Society of University Surgeons

Disclosure: Nothing to disclose.

Chandler Long, MD Resident Physician, Department of Surgery, University of Tennessee Medical Center-Knoxville

Disclosure: Nothing to disclose.

Ashis Mandal, MD Professor, Department of Surgery, Drew University of Medicine and Science and UCLA College of Medicine

Disclosure: Nothing to disclose.

Robert M McNamara, MD, FAAEM Chair and Professor, Department of Emergency Medicine, Temple University School of Medicine

Robert M McNamara, MD, FAAEM is a member of the following medical societies: American Academy of Emergency Medicine, American Medical Association, Pennsylvania Medical Society, and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

David L Morris, MD, PhD, FRACS Professor, Department of Surgery, St George Hospital, University of New South Wales, Australia

David L Morris, MD, PhD, FRACS is a member of the following medical societies: British Society of Gastroenterology

Disclosure: RFA Medical None Director; MRC Biotec None Director

Yale D Podnos, MD, MPH Consulting Surgeon, Department of Surgery, City of Hope National Medical Center

Disclosure: Nothing to disclose.

Gary Setnik, MD Chair, Department of Emergency Medicine, Mount Auburn Hospital; Assistant Professor, Division of Emergency Medicine, Harvard Medical School

Gary Setnik, MD is a member of the following medical societies: American College of Emergency Physicians, National Association of EMS Physicians, and Society for Academic Emergency Medicine

Disclosure: SironaHealth Salary Management position; South Middlesex EMS Consortium Salary Management position; ProceduresConsult.com Royalty Other

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Medscape Salary Employment

Deron J Tessier, MD Staff Surgeon, Kaiser Permanente Medical Center, Fontana, CA

Deron J Tessier, MD is a member of the following medical societies: American College of Surgeons and American Medical Association

Disclosure: Nothing to disclose.

Jeff Wade, MD Resident Physician, Department of Emergency Medicine, Long Beach Community Hospital, Greater El Monte Medical Center

Disclosure: Nothing to disclose.

Russell A Williams, MBBS Program Director, Professor, Department of Surgery, University of California Medical Center at Irvine

Disclosure: Nothing to disclose.

References
  1. Sachs SM, Morton JH, Schwartz SI. Acute mesenteric ischemia. Surgery. 1982 Oct. 92(4):646-53. [Medline].

  2. Cokkinis AJ. Observations on the mesenteric circulation. J Anat. 1930 Jan. 64:200-205. [Medline].

  3. Mamode N, Pickford I, Leiberman P. Failure to improve outcome in acute mesenteric ischaemia: seven-year review. Eur J Surg. 1999 Mar. 165(3):203-8. [Medline].

  4. Alpern MB, Glazer GM, Francis IR. Ischemic or infarcted bowel: CT findings. Radiology. 1988 Jan. 166(1 Pt 1):149-52. [Medline].

  5. Kim MY, Suh CH, Kim ST, Lee JH, Kong K, Lim TH, et al. Magnetic resonance imaging of bowel ischemia induced by ligation of superior mesenteric artery and vein in a cat model. J Comput Assist Tomogr. 2004 Mar-Apr. 28(2):187-92. [Medline].

  6. Kozuch PL, Brandt LJ. Review article: diagnosis and management of mesenteric ischaemia with an emphasis on pharmacotherapy. Aliment Pharmacol Ther. 2005 Feb 1. 21(3):201-15. [Medline].

  7. Aksu C, Demirpolat G, Oran I, Demirpolat G, Parildar M, Memis A. Stent implantation in chronic mesenteric ischemia. Acta Radiol. 2009 Jul. 50(6):610-6. [Medline].

  8. Loffroy R, Steinmetz E, Guiu B, Molin V, Kretz B, Gagnaire A, et al. Role for endovascular therapy in chronic mesenteric ischemia. Can J Gastroenterol. 2009 May. 23(5):365-73. [Medline]. [Full Text].

  9. Penugonda N, Gardi D, Schreiber T. Percutaneous intervention of superior mesenteric artery stenosis in elderly patients. Clin Cardiol. 2009 May. 32(5):232-5. [Medline].

  10. Mitchell EL, Chang EY, Landry GJ, Liem TK, Keller FS, Moneta GL. Duplex criteria for native superior mesenteric artery stenosis overestimate stenosis in stented superior mesenteric arteries. J Vasc Surg. 2009 Aug. 50(2):335-40. [Medline].

  11. Sivamurthy N, Rhodes JM, Lee D. Endovascular versus open mesenteric revascularization: immediate benefits do not equate with short-term functional outcomes. J Am Coll Surg. 2006. 202(6):859-67.

  12. Bertrán X, Muchart J, Planas R, Real MI, Ribera JM, Cabré E, et al. Occlusion of the superior mesenteric artery in a patient with polycythemia vera: resolution with percutaneous transluminal angioplasty. Ann Hematol. 1996 Feb. 72(2):89-91. [Medline].

  13. Schoots IG, Levi MM, Reekers JA, Lameris JS, van Gulik TM. Thrombolytic therapy for acute superior mesenteric artery occlusion. J Vasc Interv Radiol. 2005 Mar. 16(3):317-29. [Medline].

  14. Fink S, Chaudhuri TK, Davis HH. Acute mesenteric ischemia and malpractice claims. South Med J. 2000 Feb. 93(2):210-4. [Medline].

  15. Rosenblum JD, Boyle CM, Schwartz LB. The mesenteric circulation. Anatomy and physiology. Surg Clin North Am. 1997 Apr. 77(2):289-306. [Medline].

  16. Boley SJ. Circulatory responses to acute reduction of superior mesenteric arterial flow. Physiologist. 1969. 12:180.

  17. Hirsch AT, Haskal ZJ, Hertzer NR, Bakal CW, Creager MA, Halperin JL, et al. ACC/AHA 2005 Practice Guidelines for the management of patients with peripheral arterial disease (lower extremity, renal, mesenteric, and abdominal aortic): a collaborative report from the American Association for Vascular Surgery/Society for Vascular Surgery, Society for Cardiovascular Angiography and Interventions, Society for Vascular Medicine and Biology, Society of Interventional Radiology, and the ACC/AHA Task Force on Practice Guidelines (Writing Committee to Develop Guidelines for the... Circulation. 2006 Mar 21. 113(11):e463-654. [Medline].

  18. Chang RW, Chang JB, Longo WE. Update in management of mesenteric ischemia. World J Gastroenterol. 2006 May 28. 12(20):3243-7. [Medline].

  19. Leung DA, Schneider E, Kubik-Huch R, Marincek B, Pfammatter T. Acute mesenteric ischemia caused by spontaneous isolated dissection of the superior mesenteric artery: treatment by percutaneous stent placement. Eur Radiol. 2000. 10(12):1916-9. [Medline].

  20. Miyamoto N, Sakurai Y, Hirokami M, Takahashi K, Nishimori H, Tsuji K, et al. Endovascular stent placement for isolated spontaneous dissection of the superior mesenteric artery: report of a case. Radiat Med. 2005 Nov. 23(7):520-4. [Medline].

  21. Ko GJ, Han KJ, Han SG, Hwang SY, Choi CH, Gham CW, et al. [A case of spontaneous dissection of the superior mesenteric artery treated by percutaneous stent placement]. Korean J Gastroenterol. 2006 Feb. 47(2):168-72. [Medline].

  22. Casella IB, Bosch MA, Sousa WO Jr. Isolated spontaneous dissection of the superior mesenteric artery treated by percutaneous stent placement: case report. J Vasc Surg. 2008 Jan. 47(1):197-200. [Medline].

  23. Cappell MS. Intestinal (mesenteric) vasculopathy. I. Acute superior mesenteric arteriopathy and venopathy. Gastroenterol Clin North Am. 1998 Dec. 27(4):783-825, vi. [Medline].

  24. Boley SJ, Brandt LJ, Sammartano RJ. History of mesenteric ischemia. The evolution of a diagnosis and management. Surg Clin North Am. 1997 Apr. 77(2):275-88. [Medline].

  25. Liu JJ, Ardolf JC. Sumatriptan-associated mesenteric ischemia. Ann Intern Med. 2000 Apr 4. 132(7):597. [Medline].

  26. Abu-Daff S, Abu-Daff N, Al-Shahed M. Mesenteric venous thrombosis and factors associated with mortality: a statistical analysis with five-year follow-up. J Gastrointest Surg. 2009 Jul. 13(7):1245-50. [Medline].

  27. Endress C, Gray DG, Wollschlaeger G. Bowel ischemia and perforation after cocaine use. AJR Am J Roentgenol. 1992 Jul. 159(1):73-5. [Medline].

  28. Sudhakar CB, Al-Hakeem M, MacArthur JD, Sumpio BE. Mesenteric ischemia secondary to cocaine abuse: case reports and literature review. Am J Gastroenterol. 1997 Jun. 92(6):1053-4. [Medline].

  29. Bech FR. Celiac artery compression syndromes. Surg Clin North Am. 1997 Apr. 77(2):409-24. [Medline].

  30. Tseng YC, Tseng CK, Chou JW, Lai HC, Hsu CH, Cheng KS, et al. A rare cause of mesenteric ischemia: celiac axis compression syndrome. Intern Med. 2007. 46(15):1187-90. [Medline].

  31. Sanchez LD, Tracy JA, Berkoff D, Pedrosa I. Ischemic colitis in marathon runners: a case-based review. J Emerg Med. 2006 Apr. 30(3):321-6. [Medline].

  32. Agaoglu N, Türkyilmaz S, Ovali E, Uçar F, Agaoglu C. Prevalence of prothrombotic abnormalities in patients with acute mesenteric ischemia. World J Surg. 2005 Sep. 29(9):1135-8. [Medline].

  33. Alvi AR, Khan S, Niazi SK, Ghulam M, Bibi S. Acute mesenteric venous thrombosis: improved outcome with early diagnosis and prompt anticoagulation therapy. Int J Surg. 2009 Jun. 7(3):210-3. [Medline].

  34. Ji M, Yoon SN, Lee W, Jang S, Park SH, Kim DY, et al. Protein S deficiency with a PROS1 gene mutation in a patient presenting with mesenteric venous thrombosis following total colectomy. Blood Coagul Fibrinolysis. 2011 Oct. 22(7):619-21. [Medline].

  35. Kumar S, Sarr MG, Kamath PS. Mesenteric venous thrombosis. N Engl J Med. 2001 Dec 6. 345(23):1683-8. [Medline].

  36. Abdu RA, Zakhour BJ, Dallis DJ. Mesenteric venous thrombosis--1911 to 1984. Surgery. 1987 Apr. 101(4):383-8. [Medline].

  37. Harward TR, Green D, Bergan JJ, Rizzo RJ, Yao JS. Mesenteric venous thrombosis. J Vasc Surg. 1989 Feb. 9(2):328-33. [Medline].

  38. James AW, Rabl C, Westphalen AC, Fogarty PF, Posselt AM, Campos GM. Portomesenteric venous thrombosis after laparoscopic surgery: a systematic literature review. Arch Surg. 2009 Jun. 144(6):520-6. [Medline].

  39. Wang MQ, Lin HY, Guo LP, Liu FY, Duan F, Wang ZJ. Acute extensive portal and mesenteric venous thrombosis after splenectomy: treated by interventional thrombolysis with transjugular approach. World J Gastroenterol. 2009 Jun 28. 15(24):3038-45. [Medline]. [Full Text].

  40. Stamou KM, Toutouzas KG, Kekis PB, Nakos S, Gafou A, Manouras A, et al. Prospective study of the incidence and risk factors of postsplenectomy thrombosis of the portal, mesenteric, and splenic veins. Arch Surg. 2006 Jul. 141(7):663-9. [Medline].

  41. Wang MQ, Liu FY, Duan F, Wang ZJ, Song P, Fan QS. Acute symptomatic mesenteric venous thrombosis: treatment by catheter-directed thrombolysis with transjugular intrahepatic route. Abdom Imaging. 2011 Aug. 36(4):390-8. [Medline]. [Full Text].

  42. Swartz DE, Felix EL. Acute mesenteric venous thrombosis following laparoscopic Roux-en-Y gastric bypass. JSLS. 2004 Apr-Jun. 8(2):165-9. [Medline]. [Full Text].

  43. Cappell MS. Intestinal (mesenteric) vasculopathy. II. Ischemic colitis and chronic mesenteric ischemia. Gastroenterol Clin North Am. 1998 Dec. 27(4):827-60, vi. [Medline].

  44. Ha C, Magowan S, Accortt NA, Chen J, Stone CD. Risk of arterial thrombotic events in inflammatory bowel disease. Am J Gastroenterol. 2009 Jun. 104(6):1445-51. [Medline].

  45. Vokurka J, Olejnik J, Jedlicka V, Vesely M, Ciernik J, Paseka T. Acute mesenteric ischemia. Hepatogastroenterology. 2008 Jul-Aug. 55(85):1349-52. [Medline].

  46. Tallarita T, Oderich GS, Macedo TA, Gloviczki P, Misra S, Duncan AA, et al. Reinterventions for stent restenosis in patients treated for atherosclerotic mesenteric artery disease. J Vasc Surg. 2011 Nov. 54(5):1422-1429.e1. [Medline].

  47. Cardin F, Fratta S, Perissinotto E, Casarrubea G, Inelmen EM, Terranova C, et al. Clinical correlation of mesenteric vascular disease in older patients. Aging Clin Exp Res. 2012 Jun. 24(3 Suppl):43-6. [Medline].

  48. Di Fabio F, Obrand D, Satin R, Gordon PH. Intra-abdominal venous and arterial thromboembolism in inflammatory bowel disease. Dis Colon Rectum. 2009 Feb. 52(2):336-42. [Medline].

  49. Cardin F, Fratta S, Perissinotto E, Casarrubea G, Inelmen EM, Terranova C. Clinical correlation of mesenteric vascular disease in older patients. Aging Clin Exp Res. 2012 Jun. 24(3 Suppl):43-6. [Medline].

  50. Huang HH, Chang YC, Yen DH, Kao WF, Chen JD, Wang LM, et al. Clinical factors and outcomes in patients with acute mesenteric ischemia in the emergency department. J Chin Med Assoc. 2005 Jul. 68(7):299-306. [Medline].

  51. Safioleas MC, Moulakakis KG, Papavassiliou VG, Kontzoglou K, Kostakis A. Acute mesenteric ischaemia, a highly lethal disease with a devastating outcome. Vasa. 2006 May. 35(2):106-11. [Medline].

  52. Schoots IG, Koffeman GI, Legemate DA, Levi M, van Gulik TM. Systematic review of survival after acute mesenteric ischaemia according to disease aetiology. Br J Surg. 2004 Jan. 91(1):17-27. [Medline].

  53. Boley SJ, Sprayregen S, Veith FJ, Siegelman SS. An aggressive roentgenologic and surgical approach to acute mesenteric ischemia. Surg Annu. 1973. 5:355-78. [Medline].

  54. Klempnauer J, Grothues F, Bektas H, Pichlmayr R. Long-term results after surgery for acute mesenteric ischemia. Surgery. 1997 Mar. 121(3):239-43. [Medline].

  55. Boley SJ, Sprayregan S, Siegelman SS, Veith FJ. Initial results from an agressive roentgenological and surgical approach to acute mesenteric ischemia. Surgery. 1977 Dec. 82(6):848-55. [Medline].

  56. Nonthasoot B, Tullavardhana T, Sirichindakul B, Suphapol J, Nivatvongs S. Acute mesenteric ischemia: still high mortality rate in the era of 24-hour availability of angiography. J Med Assoc Thai. 2005 Sep. 88 Suppl 4:S46-50. [Medline].

  57. Murray MJ, Gonze MD, Nowak LR, Cobb CF. Serum D(-)-lactate levels as an aid to diagnosing acute intestinal ischemia. Am J Surg. 1994 Jun. 167(6):575-8. [Medline].

  58. Lange H, Jäckel R. Usefulness of plasma lactate concentration in the diagnosis of acute abdominal disease. Eur J Surg. 1994 Jun-Jul. 160(6-7):381-4. [Medline].

  59. Lange H, Toivola A. [Warning signals in acute abdominal disorders. Lactate is the best marker of mesenteric ischemia]. Lakartidningen. 1997 May 14. 94(20):1893-6. [Medline].

  60. Kurt Y, Akin ML, Demirbas S, Uluutku AH, Gulderen M, Avsar K, et al. D-dimer in the early diagnosis of acute mesenteric ischemia secondary to arterial occlusion in rats. Eur Surg Res. 2005 Jul-Aug. 37(4):216-9. [Medline].

  61. Acosta S, Nilsson TK, Bjorck M. Preliminary study of D-dimer as a possible marker of acute bowel ischaemia. Br J Surg. 2001 Mar. 88(3):385-8. [Medline].

  62. Altinyollar H, Boyabatli M, Berberoglu U. D-dimer as a marker for early diagnosis of acute mesenteric ischemia. Thromb Res. 2006. 117(4):463-7. [Medline].

  63. Acosta S, Nilsson TK, Björck M. D-dimer testing in patients with suspected acute thromboembolic occlusion of the superior mesenteric artery. Br J Surg. 2004 Aug. 91(8):991-4. [Medline].

  64. Clark RA, Gallant TE. Acute mesenteric ischemia: angiographic spectrum. AJR Am J Roentgenol. 1984 Mar. 142(3):555-62. [Medline].

  65. NAITOVE A, WEISMANN RE. PRIMARY MESENTERIC VENOUS THROMBOSIS. Ann Surg. 1965 Apr. 161:516-23. [Medline]. [Full Text].

  66. Kaufman SL, Harrington DP, Siegelman SS. Superior mesenteric artery embolization: an angiographic emergency. Radiology. 1977 Sep. 124(3):625-30. [Medline].

  67. Böttger T, Schäfer W, Weber W, Junginger T. [Value of preoperative diagnosis in mesenteric vascular occlusion. A prospective study]. Langenbecks Arch Chir. 1990. 375(5):278-82. [Medline].

  68. Boos S. [Angiography of the mesenteric artery 1976 to 1991. A change in the indications during mesenteric circulatory disorders?]. Radiologe. 1992 Apr. 32(4):154-7. [Medline].

  69. Czerny M, Trubel W, Claeys L, Scheuba C, Huk I, Prager M, et al. [Acute mesenteric ischemia]. Zentralbl Chir. 1997. 122(7):538-44. [Medline].

  70. Brandt LJ, Boley SJ. AGA technical review on intestinal ischemia. American Gastrointestinal Association. Gastroenterology. 2000 May. 118(5):954-68. [Medline].

  71. Savassi-Rocha PR, Veloso LF. Treatment of superior mesenteric artery embolism with a fibrinolytic agent: case report and literature review. Hepatogastroenterology. 2002 Sep-Oct. 49(47):1307-10. [Medline].

  72. American Gastroenterological Association Medical Position Statement: guidelines on intestinal ischemia. Gastroenterology. 2000 May. 118(5):951-3. [Medline].

  73. Horton KM, Fishman EK. Multi-detector row CT of mesenteric ischemia: can it be done?. Radiographics. 2001 Nov-Dec. 21(6):1463-73. [Medline].

  74. Cikrit DF, Harris VJ, Hemmer CG, Kopecky KK, Dalsing MC, Hyre CE, et al. Comparison of spiral CT scan and arteriography for evaluation of renal and visceral arteries. Ann Vasc Surg. 1996 Mar. 10(2):109-16. [Medline].

  75. Zeman RK, Silverman PM, Vieco PT, Costello P. CT angiography. AJR Am J Roentgenol. 1995 Nov. 165(5):1079-88. [Medline].

  76. Aschoff AJ, Stuber G, Becker BW, Hoffmann MH, Schmitz BL, Schelzig H, et al. Evaluation of acute mesenteric ischemia: accuracy of biphasic mesenteric multi-detector CT angiography. Abdom Imaging. 2009 May-Jun. 34(3):345-57. [Medline].

  77. Kirkpatrick ID, Kroeker MA, Greenberg HM. Biphasic CT with mesenteric CT angiography in the evaluation of acute mesenteric ischemia: initial experience. Radiology. 2003 Oct. 229(1):91-8. [Medline].

  78. Wiesner W. [Is multidetector computerized tomography currently the primary diagnostic method of choice in diagnostic imaging of acute intestinal ischemia?]. Praxis (Bern 1994). 2003 Jul 30. 92(31-32):1315-7. [Medline].

  79. Vogelzang RL, Gore RM, Anschuetz SL, Blei AT. Thrombosis of the splanchnic veins: CT diagnosis. AJR Am J Roentgenol. 1988 Jan. 150(1):93-6. [Medline].

  80. Barmase M, Kang M, Wig J, Kochhar R, Gupta R, Khandelwal N. Role of multidetector CT angiography in the evaluation of suspected mesenteric ischemia. Eur J Radiol. 2011 Dec. 80(3):e582-7. [Medline].

  81. Tambyraja AL. Management of acute mesenteric ischaemia: recommended strategy is misleading. BMJ. 2003 Aug 16. 327(7411):396; author reply 396. [Medline]. [Full Text].

  82. Ward D, Vernava AM, Kaminski DL, Ure T, Peterson G, Garvin P, et al. Improved outcome by identification of high-risk nonocclusive mesenteric ischemia, aggressive reexploration, and delayed anastomosis. Am J Surg. 1995 Dec. 170(6):577-80; discussion 580-1. [Medline].

  83. Grieshop RJ, Dalsing MC, Cikrit DF, Lalka SG, Sawchuk AP. Acute mesenteric venous thrombosis. Revisited in a time of diagnostic clarity. Am Surg. 1991 Sep. 57(9):573-7; discussion 578. [Medline].

  84. Jona J, Cummins GM Jr, Head HB, Govostis MC. Recurrent primary mesenteric venous thrombosis. JAMA. 1974 Mar 4. 227(9):1033-5. [Medline].

  85. Acosta S, Ogren M, Sternby NH, Bergqvist D, Björck M. Mesenteric venous thrombosis with transmural intestinal infarction: a population-based study. J Vasc Surg. 2005 Jan. 41(1):59-63. [Medline].

  86. Herbert GS, Steele SR. Acute and chronic mesenteric ischemia. Surg Clin North Am. 2007 Oct. 87(5):1115-34, ix. [Medline].

  87. Hansen KJ, Deitch JS. Transaortic mesenteric endarterectomy. Surg Clin North Am. 1997 Apr. 77(2):397-407. [Medline].

  88. Marudanayagam R, Syed S, Nasr H, Fox A. Outcome following mesenteric artery revascularisation for chronic mesenteric ischemia. Minerva Chir. 2011 Apr. 66(2):101-6. [Medline].

  89. Gagnière J, Favrolt G, Alfidja A, Kastler A, Chabrot P, Cassagnes L, et al. Acute thrombotic mesenteric ischemia: primary endovascular treatment in eight patients. Cardiovasc Intervent Radiol. 2011 Oct. 34(5):942-8. [Medline].

  90. Harnik IG, Brandt LJ. Mesenteric venous thrombosis. Vasc Med. 2010 Oct. 15(5):407-18. [Medline].

  91. Takahashi N, Kuroki K, Yanaga K. Percutaneous transhepatic mechanical thrombectomy for acute mesenteric venous thrombosis. J Endovasc Ther. 2005 Aug. 12(4):508-11. [Medline].

  92. Hladík P, Raupach J, Lojík M, Krajina A, Voboril Z, Jon B, et al. Treatment of acute mesenteric thrombosis/ischemia by transcatheter thromboaspiration. Surgery. 2005 Jan. 137(1):122-3. [Medline].

  93. Thomas RM, Ahmad SA. Management of acute post-operative portal venous thrombosis. J Gastrointest Surg. 2010 Mar. 14(3):570-7. [Medline].

 
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Pneumatosis intestinalis (black stripes of air) in advanced acute mesenteric ischemia (AMI) with gangrenous bowel.
CT scan (with contrast) of nonocclusive mesenteric ischemia with resulting bowel wall edema (arrows).
Aortogram showing narrowing of superior mesenteric artery.
Radiograph showing bowel spasm (early sign of ischemia).
Gas in colon wall (typical of advanced ischemia).
Ischemia stricture.
Thumbprinting of bowel, characteristic of mesenteric artery ischemia.
Pathologic findings 2 hours after bowel ischemia starts.
Microscopic findings 24 hours after ischemia starts.
Gross specimen showing hemorrhagic dead bowel after resection from patient with acute mesenteric ischemia.
Pneumatosis intestinalis, one of few radiographic findings in patients with mesenteric ischemia.
Diagnosis and treatment of intestinal ischemia (mesenteric venous thrombosis and major nonembolic arterial occlusion). Solid lines indicate accepted management plan; dashed lines indicate alternate management plan. DVT=deep vein thrombosis; SMA=superior mesenteric artery. Adapted from Gastroenterology. 2000 May;118(5):954-68.
Diagnosis and treatment of intestinal ischemia (minor arterial occlusion or embolus, major embolus, and splanchnic vasoconstriction without occlusion). Solid lines indicate accepted management plan; dashed lines indicate alternate management plan. DVT=deep vein thrombosis; SMA=superior mesenteric artery. Adapted from Gastroenterology. 2000 May;118(5):954-68.
Management of colon ischemia. Solid lines indicate accepted management plan; dashed lines indicate alternative management plan. BE=barium enema; NPO—nil per os (nothing by mouth); PLC=protein-losing colopathy; IBD=inflammatory bowel disease. Adapted from Gastroenterology. 2000 May;118(5):954-68.
Complete aortic occlusion (Leriche syndrome) with acute embolism of superior mesenteric artery.
Gross specimen of dead bowel.
Meandering artery (radiographic sign of preexisting bowel ischemia).
CT scan demonstrating thrombosis of superior mesenteric vein.
CT scan demonstrating thrombosis of portal vein.
CT scan demonstrating cavernous change of superior mesenteric vein as consequence of venous thrombosis.
 
 
 
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