[The effect of pentazocine on pyelo-ureteral activity. A radiological study (author's transl)]

Following 30 mg pentazocine lactate intravenous in the course of perfusion urography in 20 patients, changes in the amplitude and motor activity of the calicopyelic cavities were noted on a television circuit and spot-films were taken. An early and protracted increase in ureteral peristaltic activity was shown. A number of examples of this are presented.