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Fecal incontinence or constipation occurs when there is a problem with normal bowel functioning. This could be for a variety of reasons. The normal defecation pathway involves contractions of the colon which helps mix the contents, absorb water and propel the contents along. This results in feces moving along the colon to the rectum. [4]
Common causes of colonic obstruction include primary colon cancer, volvulus and post-operative adhesions. When the ileocecal valve is competent, colonic obstruction may manifest as gaseous distention of the colon, but not the small intestine; when the ileocecal valve is incompetent, it does not prevent retrograde passage of air and stool and a ...
Under ordinary conditions, the colon receives between 10% and 35% of the total cardiac output. [ 17 ] [ 18 ] If blood flow to the colon drops by more than about 50%, ischemia will develop. The arteries feeding the colon are very sensitive to vasoconstrictors; presumably this is an evolutionary adaptation to shunt blood away from the bowel and ...
Most people recognize the need for digitation as a symptom, and not a treatment. [20] Medical professionals generally do not recommend it, since it may lead to complications and is not very effective, only removing feces in the lower part of the rectum. [20] There are 3 methods: vaginal, perineal and rectal. [16] Gloves are used for hygiene. [20]
A new report from the American Cancer Society shows the rise in colorectal cancer among young people, especially men. What to look for, how to screen.
Depending on the level of obstruction, bowel obstruction can present with abdominal pain, abdominal distension, and constipation.Bowel obstruction may be complicated by dehydration and electrolyte abnormalities due to vomiting; respiratory compromise from pressure on the diaphragm by a distended abdomen, or aspiration of vomitus; bowel ischemia or perforation from prolonged distension or ...
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The internal anal sphincter forms the walls of the anal canal. The internal anal sphincter is not under voluntary control, and in normal persons it is contracted at all times except when there is a need to defecate. This means that the internal anal sphincter contributes more to the resting tone of the anal canal than the external anal sphincter.
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