Electromicturition in male dogs at pelvic nerve stimulation. An urethrocystographic study.

Abstract

Electromicturition released by stimulation of the pelvic nerves has been studied in 23 male mongrels. This course has been followed by measurements of the bladder pressure and urethrocystography with filmchanger and cinefluorography respectively. In order to investigate the influence of various nerves, muscles and erectile tissue on micturition, the experiment was varied as follows. The pudendal nerves were severed or stimulated. The pelvic nerves were cut proximal to the electrodes. The bulbocavernous muscle was cut. Chordotomy was performed in some dogs immediately before the examination. Sympathectomy was made 2-6 weeks prior to the study. Finally, angiography of the pudendal artery was accomplished with and without stimulation of the pelvic nerves. Electrical stimulation of the pelvic nerves always gives rise to a contraction of the detrusor. Simultaneously an antidromic stimulation of the external sphincter appears, complicating the micturition, which is clearly demonstrated during the first phase of...