Lower Gastrointestinal Bleeding Medication
- Author: Burt Cagir, MD, FACS; Chief Editor: Julian Katz, MD more...
Medication Summary
Vasoconstrictive agents reduce the blood flow and facilitate hemostatic plug formation in the bleeding vessel. However, the results are less than satisfactory in patients with severe atherosclerosis and coagulopathy.
Posterior Pituitary Hormones
Class Summary
Agents with vasopressor and antidiuretic hormone (ADH) activity may reduce lower gastrointestinal bleeding (LGIB).
Vasopressin (Pitressin Injection)
Vasopressin is a pituitary hormone that causes severe vasoconstriction in the splanchnic bed. This agent has vasopressor and ADH activity: Vasopressin increases water resorption at the distal renal tubular epithelium (ADH effect) and promotes smooth muscle contraction throughout the vascular bed of the renal tubular epithelium (vasopressor effects). However, vasoconstriction also increases in the splanchnic, portal, coronary, cerebral, peripheral, pulmonary, and intrahepatic vessels.
Vasopressin decreases portal pressure in portal hypertension. A notable undesirable effect is coronary artery constriction that may dispose patients with coronary artery disease to cardiac ischemia. This can be prevented with concurrent use of nitrates.
Decreases portal pressure in portal hypertension. A notable undesirable effect is coronary artery constriction that may dispose patients with coronary artery disease to cardiac ischemia. This can be prevented with concurrent use of nitrates.
Adrenergic Agonists
Class Summary
Epinephrine can be used in lower gastrointestinal bleeding, causing vasoconstriction and physical compression of the vessel. Epinephrine may be used in cases of diverticular bleeding or postpolypectomy hemorrhage.
Epinephrine
Epinephrine has alpha-agonist effects that include increased peripheral vascular resistance, reversed peripheral vasodilatation, systemic hypotension, and vascular permeability. Beta2-agonist effects include bronchodilatation, chronotropic cardiac activity, and positive inotropic effects. Epinephrine solution (1/10,000 ) can be injected into bleeding site at the time of endoscopic evaluation.
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| Lower Gastrointestinal Bleeding in Adults | Percentage of Patients |
Diverticular disease
| 60% |
Inflammatory bowel disease
| 13% |
Benign anorectal diseases
| 11% |
Neoplasia
| 9% |
| Coagulopathy | 4% |
| Arteriovenous malformations (AVMs) | 3% |
| TOTAL | 100% |
| Source: Vernava AM, Longo WE, Virgo KS. A nationwide study of the incidence and etiology of lower gastrointestinal bleeding. Surg Res Commun. 1996;18:113-20.[6] | |
| Lower Gastrointestinal Bleeding in Children and Adolescents |
| Intussusception |
Polyps and polyposis syndromes
|
Inflammatory
|
| Meckel diverticulum |

