Eltringham, M.T.; McCauley, E.; Bain, I.M.; Yiannakou, J.Y.
April 2003
Gut;Apr2003 Supplement 1, Vol. 52, pA88
Academic Journal
Background: Colonic transit study is a widely used investigation in patients with chronic constipation. It has been suggested that it is possible to determine from the distribution of markers in various regions of the colon whether the patient has an evacuatory disorder or colonic inertia. The aim of the study is to assess whether this is the case. Methods: 40 patients who attended a specialist constipation clinic were investigated using colonic transit studies and radionuclide proctography. The patients all had prolonged transit and were divided into 2 groups, normal or prolonged evacuation rate on the basis of the proctogram. The transit studies from the 2 groups were assessed by two different methods number of markers in the left and right colon; and number of markers in 3 regions (right colon, proximal left colon and rectosigmoid). Results: 17 patients had prolonged evacuation rates and 23 were normal. The mean values for numbers of transit study markers on the whole left colon (TSMLtotal), proximal left colon (TSNPL), and rectosigmoid (TSMRS) are shown in Table 1. The number of markers in the rectosigmoid is also expressed as a percentage of the total number of markers retained throughout the colon (RS%TC) and percentage of total left colonic markers (RS%L). Discussion: There is no significant difference between the abnormal and normal evacuation rate groups in terms of total numbers of left sided or rectosigmoid markers. This indicates that the segmental method of assessing radiological marker transit studies is no more accurate in indicating an evacuatory disorder than the left or right method.


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