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Br J Surg. 1997 Aug;84(8):1141-3.
Gastric emptying in patients with constipation following childbirth and due to idiopathic slow transit.

MacDonald A, Baxter JN, Bessent RG, Gray HW, Finlay IG.

Department of Coloproctology, Royal Infirmary, Glasgow, UK.

BACKGROUND: Idiopathic slow transit constipation (ISTC) is considered to be a heterogeneous condition in which patients have varying sites and degrees of delayed gastrointestinal transit. The majority of patients have pancolonic disease, and colectomy with ileocolorectal anastomosis has been the mainstay of surgical treatment. Severe constipation following traumatic childbirth is now being recognized and this subgroup of patients may have delayed transit confined to the rectosigmoid colon. In theory, proximal transit in these patients should be normal. METHODS: Gastric emptying was studied in patients with constipation following childbirth or ISTC and in controls. After an overnight fast, both patients and controls received breakfast, which consisted of cornflakes, sugar and milk. The liquid marker 111In-labelled di-ethylene tri-amine penta-acetic acid (DTPA) was added to the milk. A solid marker, 99mTc-labelled colloid, was impregnated on to paper and sealed with cellulose. The t1/2 for gastric emptying was calculated. RESULTS: Liquid phase emptying was normal in both constipation following childbirth and ISTC. Solid phase emptying was delayed significantly in ISTC compared with that in patients with constipation following childbirth and controls. In addition, half the patients with ISTC had delayed transit through the small bowel and proximal colon. Small bowel and colonic transit were normal in patients with constipation following childbirth. CONCLUSION: Patients with constipation following childbirth represent a distinct subgroup with normal proximal gastrointestinal function. Gastric emptying studies may be helpful in selecting patients for surgical management of severe constipation.

Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9278663&dopt=Abstract constipation laxative [PubMed - indexed for MEDL



Aust N Z J Surg. 1997 Aug;67(8):562-5.
Laparoscopic-assisted compared with open total colectomy in treating slow transit constipation.

Ho YH, Tan M, Eu KW, Leong A, Choen FS.

Department of Colorectal Surgery, Singapore General Hospital, Singapore.

BACKGROUND: Total colectomy is the procedure of choice when slow transit constipation (STC) can be confidently diagnosed. A laparoscopic-assisted technique (LTC) may be potentially advantageous over traditional open technique (OTC) in the treatment of this benign condition. METHODS: A historical control (non-randomized) study was performed on patients diagnosed to have STC after clinical, anorectal physiologic and transit marker studies. All earlier consecutive patients underwent OTC and the latter consecutive patients underwent LTC. The intra-operative time, blood loss, postoperative ileus recovery, duration of hospitalization and complications were recorded. A bowel function and patient satisfaction questionnaire was administered on follow-up. RESULTS: Twenty-four of 411 patients were found to have STC; 17 (2 men, 15 women; mean age, 40 (standard error of mean [SEM] 5) years) underwent OTC and 7 (2 men, 5 women; mean age, 39.5 (SEM 6) years) underwent LTC. There were significant improvements in the stool frequency, need for assisted evacuation and abdominal distension (P < 0.05) after both procedures; 96% were fully satisfied with the resulting bowel function. However, OTC patients were less satisfied with the cosmetic outcome (P < 0.05). Intra-operative time for LTC was longer by a mean 74 min (P < 0.05). Postoperative blood loss, recovery of ileus and hospitalization time were the same in both groups. There were no deaths. The complication rates were 43% for LTC and 24% for OTC. The predominant complication was bowel obstruction for which two patients (both OTC) required adhesiolysis. CONCLUSIONS: Both OTC and LTC improve bowel function for STC;LTC gives a better cosmetic result, but takes longer to perform.

Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9287926&dopt=Abstract constipation laxative [Pub



Dis Colon Rectum. 1997 Sep;40(9):1033-41.
Anismus: fact or fiction?

Schouten WR, Briel JW, Auwerda JJ, van Dam JH, Gosselink MJ, Ginai AZ, Hop WC.

Department of Surgery, University Hospital Dijkzigt, Rotterdam, The Netherlands.

PURPOSE: Although anismus has been considered to be the principal cause of anorectal outlet obstruction, it is doubtful whether contraction of the puborectalis muscle during straining is paradoxical. The present study was conducted to answer this question. METHODS: During the first part of the study, we retrospectively reviewed 121 patients with constipation and/or obstructed defecation (male:female, 10/111; median age, 51 years). All of these patients underwent electromyography (EMG) of the pelvic floor and the balloon expulsion test (BET) in the left lateral position. Evacuation proctography was performed in all of these patients in the sitting position. Both the posterior anorectal angle and the central anorectal angle were measured. EMG and BET were also performed in ten controls (male:female, 4/6; median age, 47). In 147 patients with fecal incontinence (male:female, 24/123; median age, 58) only EMG activity was recorded. Criteria for anismus during straining were increase or insufficient (<20 percent) decrease of EMG activity, failure to expel an air-filled balloon on BET, and decrease or insufficient (<5 percent) increase of anorectal angle on evacuation proctography. Between June 1994 and March 1995, we conducted a second prospective study in a consecutive series of 49 patients with constipation and/or obstructed defecation and 28 patients with fecal incontinence. Both groups were compared with 19 control subjects. In this study, all three tests were performed. EMG and BET were performed both in the left lateral position and in the sitting position. RESULTS: The retrospective study was undertaken by comparing the constipated patients with the incontinent patients and the controls, and the anismus detected by EMG was found in, respectively, 60, 46, and 60



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