ISSN:
1437-9813
Keywords:
Functional neuromuscular stimulation
;
Electrical treatment
;
Anorectal malformations
;
anal continence
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The purpose of the present study was to examine the optimal parameters for electrical stimulation of the anal sphincters to improve fecal incontinence in a child after abdominoperineal anorectoplasty for imperforate anus. A pair of coiled-wire electrodes was implanted bilaterally into the deep external sphincter, and alternating bidirectional, biphasic pulses of regulated current were applied. Anal pressure increased in response to an increase in pulse amplitude, width, or frequency, but fell again rapidly when the pulse frequency was higher than 10 Hz. Assuming that an anal pressure of 30 mmHg was necessary to improve anal continence and that tissue damage caused by electrical stimulation and muscle fatigue should be minimized, pulse frequency of 5 Hz and pulse width of 0.1–0.3 ms were determined to be desirable parameters for effective electrical anal sphincter stimulation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00184218
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