Physiological and Functional Evaluation of the Transposed Human Pylorus as a Distal Sphincter.
- Author:
Abhijit CHANDRA
1
;
Uday C GHOSHAL
;
Vishal GUPTA
;
Ramendra JAUHARI
;
Rajendra N SRIVASTAVA
;
Asha MISRA
;
Ashok KUMAR
;
Manoj KUMAR
Author Information
1. Department of Surgical Gastroenterology, CSM Medical University, Lucknow, India. abhijitchandra@hotmail.com
- Publication Type:Original Article
- Keywords:
Fecal incontinence;
Gastroepiploic artery;
Manometry;
Pylorus
- MeSH:
Angiography;
Barium;
Cohort Studies;
Colon, Sigmoid;
Colostomy;
Fecal Incontinence;
Follow-Up Studies;
Gastroepiploic Artery;
Hand Strength;
Humans;
Manometry;
Perineum;
Pylorus;
Retention (Psychology);
Sensation;
Transplants
- From:Journal of Neurogastroenterology and Motility
2012;18(3):269-277
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND/AIMS: Studies evaluating the human pylorus as a sphincter are scanty and contradictory. Recently, we have shown technical feasibility of transposing the human pylorus for end-stage fecal incontinence. This unique cohort of patients provided us an opportunity to study the sphincter properties of the pylorus in its ectopic position. METHODS: Antro-pylorus transposition on end sigmoid colostomies (n = 3) and in the perineum (n = 15) was performed for various indications. Antro-pylorus was assessed functionally (digital examination, high resolution spatiotemporal manometry, barium retention studies and colonoscopy) and by imaging (doppler ultrasound, MRI and CT angiography) in its ectopic position. RESULTS: The median resting pressure of pylorus on colostomy was 30 mmHg (range 28-38). In benign group, median resting pressure in perineum was 12.5 mmHg (range 6-44) that increased to 21.5 mmHg (range 12-29) (P = 0.481) and 31 mmHg (range 16-77) (P = 0.034) on first and second follow-up, respectively. In malignant group, median post-operative pressures were 20 mmHg (range 14-36) and 21 mmHg (range 18-44) on first and second follow-up, respectively. A definite tone and gripping sensation were felt in all the patients on digital examination. On distal loopogram, performed through the diverting colostomies, barium was retained proximal to the neo-pyloric valve. Both perineal ultrasound and MRI showed viable transposed graft. CT angiography and color doppler studies confirmed vascular flow in the transposed position. CONCLUSIONS: The human pyloric valve can function as a tonic sphincter when removed from the gastroduodenal continuity.
