[Sonographic study of the effect of hyoscin-N-butylbromide on cholecystokinin stimulated gallbladder motility].

The influence of the spasmolytic agent Hyoscine-N-butylbromide on the Cholecystokinin induced gallbladder contraction was investigated by ultrasonography in 25 volunteers. Even at a dosage of 0.15 mg/kg i.v. administered Hyoscine-N-butylbromide inhibited significantly the gallbladder emptying. In the investigated dosage range up to 0.6 mg/kg Hyoscine-N-butylbromide a strong response relationship was found. Since after the application of Hyoscine-N-butylbromide 30 min. before Cholecystokinin injection no loss of efficacy was observed, a considerably longer duration of the spasmolytic effect can be assumed. Also the oral form of the spasmolytic (dragees, mean dosage 0.6 mg/kg, application 30 min. before Cholecystokinin) showed a significant inhibition of gallbladder motility.