期刊
COLORECTAL DISEASE
卷 13, 期 11, 页码 1299-1302出版社
WILEY
DOI: 10.1111/j.1463-1318.2010.02455.x
关键词
Constipation; colonic inertia; slow transit constipation; outlet obstruction; obstructed defaecation; proctography; anorectal disorders; colorectal motility
Aim Chronic constipation is classified as outlet obstruction, colonic inertia or both. We aimed to determine the incidence of isolated colonic inertia in chronic constipation and to study symptom pattern in those with prolonged colonic transit time. Methods Chronic constipation patients were classified radiologically by surgeon-reported defaecating proctography and transit study into four groups: isolated outlet obstruction, isolated colonic inertia, outlet obstruction plus colonic inertia, or normal. Symptom patterns were defined as stool infrequency (twice weekly or less) or frequent unsuccessful evacuations (more than twice weekly). Results Of 541 patients with chronic constipation, 289 (53%) were classified as isolated outlet obstruction, 26 (5%) as isolated colonic inertia, 159 (29%) as outlet obstruction plus colonic inertia and 67 (12%) as normal. Of 448 patients (83%) with outlet obstruction, 35% had additional colonic inertia. Only 14% of those with prolonged colonic transit time had isolated colonic inertia. Frequent unsuccessful evacuations rather than stool infrequency was the commonest symptom pattern in all three disease groups (isolated outlet obstruction 86%, isolated colonic inertia 54% and outlet obstruction plus colonic inertia 63%). Conclusion Isolated colonic inertia is an unusual cause of chronic constipation. Most patients with colonic inertia have associated outlet obstruction. These data question the clinical significance of isolated colonic inertia.
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