Ischemic Colitis

Ischemic colitis is usually seen in older patients, most of whom have atherosclerotic disease. The segments of colon most susceptible to ischemic injury are so-called "watershed" areas between the major mesenteric arteries, such as the splenic flexure, descending colon, and sigmoid colon. Physiologic factors such as low perfusion pressure (eg, from hypotension, tachydysrhythmia), decreased colonic perfusion secondary to altered colonic motility, and sustained mesenteric vasospasm predispose patients to colonic ischemia. Ischemic colitis usually presents as abrupt, crampy abdominal pain, most often located in the left lower quadrant. This pain is often accompanied by the sudden urge to defecate and the passage of bright red blood or dark clots. It accounts for 3 to 9% of cases of lower GI bleeding and usually is self-limiting. There is a separate chapter on ischemic bowel disease (see Chapter 70, "Mesenteric Vascular Ischemia").

Constipation Prescription

Constipation Prescription

Did you ever think feeling angry and irritable could be a symptom of constipation? A horrible fullness and pressing sharp pains against the bladders can’t help but affect your mood. Sometimes you just want everyone to leave you alone and sleep to escape the pain. It is virtually impossible to be constipated and keep a sunny disposition. Follow the steps in this guide to alleviate constipation and lead a happier healthy life.

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