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Cathartic colon.

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Aged↗

Cathartic-induced magnesium toxicity during overdose management.

A 39-year-old women was admitted to the hospital following a large ingestion of a tricyclic antidepressant. The administration of magnesium citrate in repeated doses with activated charcoal resulted in a striking increase in serum magnesium levels followed by acute neuromuscular deterioration and respiratory depression. The patient required dialysis for control of hypermagnesemia. Her clinical condition improved slowly without further complication and she was discharged to a rehabilitation center.

Adult↗

Helicobacter pylori in cathartic stools of subjects with and without cimetidine-induced hypochlorhydria.

We previously identified viable Helicobacter pylori in stools from asymptomatic hosts. We now report whether a decrease in gastric acidity enhances faecal shedding. Sixteen asymptomatic H. pylori-positive patients underwent two separate days of phosphosoda-induced diarrhoea, both with normal gastric acidity and under hypochlorhydric conditions induced with the H2-blocker cimetidine. Stool samples were collected for culture to determine the presence of viable H. pylori. Five of the 16 patients gave positive cultures with at least one stool from both normal pH and cimetidine-induced hypochlorhydria. Four were negative for all samples with both. Six gave positive stools only after cimetidine treatments, while one gave positive samples with normal pH but not with cimetidine (two-tailed P value, 0.13; McNemar test). These numbers show a trend suggesting that cimetidine-induced hypochlorhydria increases shedding of viable H. pylori.

Achlorhydria↗

CT colonography without cathartic preparation: feasibility study.

PURPOSE: To evaluate methods for contrast material labeling of stool in the unprepared colon for computed tomographic (CT) colonography and to determine their sensitivity for polyp detection. MATERIALS AND METHODS: Fifty-six patients with suspected or known polyps were assigned to five groups. Two to seven doses of 225 mL of dilute contrast material were orally administered during 24 or 48 hours. Transverse CT images were assessed for effectiveness of stool labeling. Colonoscopy was performed in all patients and was the standard. Two radiologists blinded to prior imaging and colonoscopic results assessed polyp detection. RESULTS: For each group, average stool labeling scores and ranges were as follows: 24 hour two dose, 16% and 8%-21%; 24 hour five dose, 53% and 27%-66%; 48 hour four dose, 38% and 22%-48%; 48 hour six dose, 68% and 54%-77%; and 48 hour seven dose, 88% and 75%-98%. Sensitivity for the two radiologists for the identification of patients with polyps 1 cm or larger for each group was as follows: 24 hour two dose, 50% and 67%; 24 hour five dose, 100% and 100%; 48 hour four dose, 58% and 75%; 48 hour six dose, 56% and 67%; and 48 hour seven dose, 100% and 80%. CONCLUSION: Ingestion of contrast material adequately labels stool for lesion identification; a 48-hour lead time and multiple doses of contrast material are required. Sensitivity for polyp detection in patients with adequate stool labeling approaches the sensitivity for polyp detection in prepared colons.

Barium Sulfate↗

Gastrointestinal dialysis with activated charcoal and cathartic in the treatment of adolescent intoxications.

This article reports five patients who had taken a substantial medication overdose and presented in coma. Two had taken a salicylate overdose and three a phenobarbital overdose (one of these ingested a combination of phenobarbital and phenytoin). The cases were treated by our standard protocol of supportive therapy and alkaline diuresis plus repetitive oral doses of activated charcoal (gastrointestinal dialysis). All patients were alert and oriented within 24 hours. Toxicokinetic analysis of the blood levels is discussed. Gastrointestinal dialysis represents a relatively noninvasive method that may benefit certain intoxicated patients even after systemic absorption has occurred. The technique and recommendations for its use are discussed and described in detail.

Adolescent↗