Year: 2000
Type: dissertation
Abstract: The aim of this study was to examine rectal tone in response to an evoked urge to defecate and to identify differences between female controls and women with obshucted defecation. One hundred women with obstmcted defecation entered the study. Sixty-nine of these women had a normal, and 31 a prolonged total colonic transit time. For comparison, 40 female controls were also shldied. Under radiological control an 'infinitely' compliant polyethylene bag was inserted over a guide wire into the proximal part of the rectum. Additionally, a latex balloon was introduced into the distal part of the rectum. This latex balloon was inflated until an urge to defecate was experienced. Simultaneously rectal wall tone was assessed by measuring the variations in bag volume. These variations were expressed as percentage changes from the baseline volume. Comparing controls and patients with obstructed defecation, a significant difference was found regarding mean distending volume required to elicit an urge to defecate (median value: 125 (range: 25200) versus 320 (range: 25-450) cc of air, p< 0,001). Twenty-four women (24%) did not feel an urge to defecate at all. In all controls the evocation of an urge to defecate induced a pronounced increase in rectal tone, proximal to the distal stimulating balloon (mean value: 32,3±9%), In the women with obstructed defecation, this increase in rectal tone was significantly lower (mean value: 19,8±8%, 1'<0,00 I). Thirty-one patients (31 %) showed no increase in rectal tone at all. In IS of these patients, it was not possible to evoke an urge to defecate by balloon distension. Regarding rectal tone in response to an evoked urge to delecate, no significant difference was found between patients with normal, and those with prolonged transit time. In conclusion, the assembly lIsed in this study provides a useful tool for the investigation of rectal tone in response to an evoked urge to defecate evacuation. During evocation of an urge to defecate by rectal distension, rectal tone increases in women with obstructed defecation, the increase in rectal tone in response to an evoked urge to defecate is absent or significantly blunted,
Author: M. Gosselink
Language: English
Subfield: Urology
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2121244597