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Abstract
Background: This study tried to resolve whether glucagon is a better premedication for endoscopic retrograde cholangiopancreatography (ERCP). Methods: We first measured the basal blood sugar and amylase levels. Then an endoscope was placed in the duodenum without premedication, and basal pulse and duodenal peristaltic rates were measured. ERCP began after studied subjects were randomly premedicated with either 1 mg glucagon (n = 38) or 40 mg hyoscine N-butyl bromide (n = 36) intravenously. Ten minutes later the variables were measured again. Results: Glucagon elicited hyperglycemia whereas hyoscine N-butyl bromide manifested an anticholinergic effect. No difference was found between these two groups with regard to the necessary interval for ERCP (20.6 ± 14.1 min versus 21.4 ± 14.7 min; NS) or the success rate for cholangiopancreatography (92.1% versus 91.7%; NS). Neither hyperamylasemia nor pancreatitis was preventable when glucagon was used. Conclusions: The two premedications appear equally effective in the performance of ERCP.