[Induction of micturition in the cat by electric stimulation of the sacral roots].

Abstract:

:The authors carried out detailed experiments on cats under anaesthesia, with electrical stimulation of the L7, S1, S2 and S3 ventral roots and of the vesical detrusor in order to study their contraction. They varied the frequency, intensity and duration parameters of the stimulation beats, using as contraction index, the variations in the intravesical pressure measured by means of a urethral catheter. They controlled the intraabdominal pressure by means of a ball and juxtavesical catheter full of H2O. They investigated two main aspects: 1) The stimulation of which root is most effective, and 2) what combination of stimulation parameters produces the greatest and longest-lasting contractile response and miction. The L7 stimulation was ineffective and S2 was the root which produced the greatest increases in pressure. Increases in frequency and intensity in the course of stimulation up to 20 Hz and 6 mA were progressively more effective. The discontinued stimuli 1 s on 1 s off, were more effective, partially revealing the effects of "fatigue". Finally, the authors discuss the problems of electric stimulation of lumbo-sacral roots.

journal_name

Arch Esp Urol

authors

Tallada M,Perales L,Romero J,Buño W Jr

subject

Has Abstract

pub_date

1980-07-01 00:00:00

pages

333-48

issue

4

eissn

0004-0614

issn

1576-8260

journal_volume

33

pub_type

杂志文章
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