Continuous measurement of common bile duct pressure with an indwelling microtransducer catheter introduced by duodenoscopy: new diagnostic aid for postcholecystectomy dyskinesia—a preliminary report

Morphine was given to two patients suspected of having postcholecystectomy dyskinesia to induce spasm of sphincter of Oddi and was successful in reproducing pain, while common bile duct pressure was continuously monitored with an indwelling high fidelity microtransducer catheter introduced by duodenoscopy. The rise of intracholedochal pressure was found to coincide exactly with the occurrence of the pain, thus suggesting the biliary origin of...