Abstract
The ureteral function in calculous disease of the upper urinary tract was examined by ureteral electromyography, and the dynamics of the renal pelvis in the same condition was studied by radiopyelography. Prolongation of discharge interval and generation of antiperistalsis were observed on electroure-terograms, and prolongation of the C-D interval was revealed by radiopyelography. These facts indicate that urine flows irregularly and stagnates in the renal pelvis. The disturbance in urinary flow may contribute to stone growth.
