Irritable bowel syndrome: can the patient's response to colonoscopy help with diagnosis?

The irritable bowel syndrome (IBS) is a common disorder estimated to affect up to 20% of adult Caucasians, with only a small percentage requiring investigation. This prospective study was performed to substantiate the impression that patients with IBS experience more pain during endoscopic examination of the colon than do patients with other conditions. Patients with IBS were observed to experience significantly more pain during colonoscopy than did patients without IBS (median observed pain scores 46 and 9, respectively), p < 0.001. The intensity of the pain perceived during examination was significantly higher for patients with IBS than for those without IBS (median 52.5 and 23.5, respectively), p < 0.001. Within the groups, there was no significant difference between flexible sigmoidoscopy and colonoscopy in observed or perceived pain. 64% of the patients with IBS said that the pain experienced at colonoscopy was identical to their presenting pain. This study supports the hypothesis of a lower colonic pain threshold with colonic hyperalgesia in patients with IBS. We have found that hypersensitivity to the endoscopic examination of the colon is a useful clinical adjunct in the diagnosis of the IBS in those selected to undergo colonoscopy.

Endoscopic management of intragastric migration of an Angelchik prosthesis.

The Angelchik prosthesis was devised as a simple surgical solution for reflux oesophagitis. Since 1983 there have been increasing reports of complications attributed to the prosthesis, the more serious being transmural erosion through the oesophageal or gastric wall. The majority of these have required repeat surgery, which is not without risks. A case report of an Angelchik prosthesis incompletely eroding into the stomach is presented. The prosthesis was tethered by a 1 cm-thick mucosal bridge which precluded simple extraction. Using an endoscopic sphincterotome, the bridge was divided and the prosthesis removed. Endoscopic methods of extracting intragastric Angelchik prostheses should be considered before surgery is undertaken for this complication.

Microcapsule artificial kidney: treatment of patients with acute drug intoxication.

The microcapsule artificial kidney was used in the treatment of three patients with acute drug intoxication. The apparatus contains 300 g. of microencapsulated activated charcoal with a total membrane area available for diffusion of more than 2m.(2) The membrane thickness is only 500 A. These properties make possible a compact artificial kidney whose efficiency for the removal of uremic metabolites and drugs is much higher than standard hemodialysis apparatus. The microcapsules are made blood-compatible by coating with human albumin. A roller pump was used to propel the blood through the microcapsule artificial kidney at a flow rate of 300 ml./min. for two to three hours. The clearance values for glutethimide, methyprylon and methaqualone were much higher than those achieved by standard hemodialysis. Hemoperfusion quickly lowered the drug level in the blood with resulting clinical improvement.