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Biomedical subjects

M M Schuster

Publications and source records attributed to M M Schuster.

At least 73 records · Page 4Linked to original sources
PubMed1981

Stercoral perforation of the colon: case report and review of the literature.

A case of stercoral ulceration with perforation in a colostomy patient is presented, and the literature of stercoral ulcers is reviewed. Significant features of this illness include preceding history of constipation, its presentation as an acute abdomen, radiologic signs of a perforated viscus, and a distinctive histologic picture. Treatment of choice is surgery with exteriorization and colostomy. The condition is rate and has a high mortality, although preoperative diagnosis may play a role in greater survival.

Adult↗
PubMed1980

Irritable bowel syndrome: physiological and psychological differences between diarrhea-predominant and constipation-predominant patients.

Patients with different irritable bowel symptoms and normal subjects were compared to determine whether subtypes of irritable bowel syndrome (IBS) could be distinguished on the basis of colonic motility or psychological test scores. A provocative test involving stepwise distension of the rectosigmoid area revealed two types of colonic motility. Slow contractions having durations of at least 15 sec and occurring at irregular intervals were more frequent in IBS patients than in normals but did not differentiate constipation from diarrhea. Fast contractions having durations of less than 15 sec and occurring in runs at frequencies of 6-9 cpm were more frequent in patients with diarrhea than in normals or constipated IBS patients. Constipated patients showed no more fast contractions than normals. Severity of bowel symptoms was correlated with the overall amount of motility (motility index) in patients with diarrhea but not in patients with constipation. Patients with IBS showed significantly elevated levels on the following psychological traits: anxiety, interpersonal sensitivity, depression, hostility, and somatization of affect. However, there were no significant trait differences between patients with diarrhea and those with constipation. Also, there was no correlationbetween amount of psychopathology and either colonic motility or severity of symptoms in the whole group of IBS patients.

Adult↗
PubMed1976

Pneumatic ileal perforation: an unusual complication of colonoscopy.

Pneumatic perforation of the bowel is a rare complication of colonoscopy. Pneumatic ileal perforation complicating this procedure has not been reported. We describe a case of pneumatic ileal perforation during colonoscopy in an elderly lady who also had adhesions from previous abdominal surgery. A relative lack of symptomatology, the finding of a clean ileal perforation at surgery, and a benign postoperative period characterized her course. Possible etiological factors are discussed with reference to the literature dealing with intraluminal pressures in the bowel. Pressure much higher than the physiological pressure is likely to be reached during colonoscopy, with reflux of air across the ileocecal sphincter acting as a safety mechanism. Bursting pressures differ for different layers of the bowel and from segment to segment. This report calls attention to certain risk factors which might lead to a remote perforation during colonoscopy.

Aged↗