Abstract
The effect of the long-acting somatostatin analog octreotide on the sphincter of Oddi was investigated in seven subjects referred for endoscopic sphincter of Oddi manometry. Six patients had unexplained right upper quadrant pain and one had bile duct dilatation without evidence of fixed obstruction on endoscopic retrograde cholangiopancreatography. A triple-lumen low-compliance system was used to record the sphincter of Oddi basal pressure, phasic contraction frequency, amplitude, duration, and direction of wave propagation before and after intravenous administration of octreotide in a dose of 50 μg. After a mean latency period of 1 min, significant changes included increased basal pressure in all seven patients, increased frequency of wave contractions in six patients, and decreased wave amplitude in six patients. The median duration of wave contraction and wave propagation sequence were not significantly influenced. Thus, octreotide has a significant stimulatory affect on the sphincter of Oddi activity, which may impair biliary and pancreatic flow.
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Binmoeller, K.F., Dumas, R., Harris, A.G. et al. Effect of somatostatin analog octreotide on human sphincter of Oddi. Digest Dis Sci 37, 773–777 (1992). https://doi.org/10.1007/BF01296438
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DOI: https://doi.org/10.1007/BF01296438