Level of highest mean resting pressure segment in the anal canal. A quantitative assessment of anal sphincter function

Diseases of the Colon and Rectum
R N GoesR W Beart

Abstract

Even with the development of new technologies, the mechanism of fecal continence is still not completely understood. This study evaluates the relative position of the highest mean resting pressure (HMRP) in the anal canal and its correlation with function in incontinent patients and in controls. Sixteen incontinent patients (mean age, 47.1 +/- 13.9 (range, 18-63) years; 12 female) and 16 controls (mean age, 35.4 +/- 8.7 (range, 24-58) years; 12 female) were studied using a water-perfused eight-port radial catheter computer-assisted vectromanometry. Position of the HMRP was analyzed in relation to the anal verge (D1) and to the proximal functional border of the anal canal (D2). Controls had HMRP located more distally in the anal canal, because D2 was significantly higher than D1 (mean, 3.45 +/- 0.75 vs. 1.81 +/- 0.63 cm; p + 0.001). For incontinent patients, D1 and D2 were similar (mean, 1.86 +/- 0.75 vs. 2.08 +/- 1.11 cm; not significant). Comparison of the relative position of the HMRP between patients and controls showed a more proximal location for incontinent patients than controls (mean, 49.1 +/- 12.1 percent vs. 35.4 +/- 10.2 percent; p = 0.002). Position of the HMRP is significantly more proximal for incontinent patients...Continue Reading

References

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Citations

May 21, 1998·Diseases of the Colon and Rectum·C M ParelladaD Johnston
Aug 24, 2011·Journal of Neurogastroenterology and Motility·Moo-Kyung SeongSung-Il Jung
Jun 1, 1997·The British Journal of Surgery·R FaroukL L Gunderson
Jun 11, 1999·The American Journal of Gastroenterology·L SiproudhisM Gosselin

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