Experimental model of continent colostomy using rectus abdominis neosphincteroplasty

Publication

Experimental model of continent colostomy using rectus abdominis neosphincteroplasty

Journal Paper/Review - Oct 1, 2003

Hetzer Franc, Schwizer W, Kuenzi W, Demartines N

Citation

Hetzer F, Schwizer W, Kuenzi W, Demartines N. Experimental model of continent colostomy using rectus abdominis neosphincteroplasty. The British journal of surgery 2003; 90:1273-9.

Type

Journal Paper/Review (English)

Journal

The British journal of surgery 2003; 90

Publication Date

Oct 1, 2003

Issn Print

0007-1323

Pages

1273-9

Brief description/objective

BACKGROUND: Use of dynamic myoplasty to create a continent stoma has produced promising results, but long-term stoma continence has not been achieved. The aim of the study was to establish and test a new model. METHODS: Three types of dynamic rectus abdominis sphincteroplasty around a colostomy and two conditioning protocols were tested in ten domestic pigs. Continence was assessed by means of conventional defaecography and neosphincter manometry after 8 and 12 weeks. The neosphincter muscle was studied histologically to assess the transformation of muscle type. RESULTS: Use of a distal rectus muscle sling surrounding the stoma by 270 degrees with a low-frequency conditioning protocol achieved a continent colostomy for more than 12 h on each of 5 consecutive days. The neosphincter had a 40-mm high-pressure segment with mean pressure of 74 (range 67-82) mmHg. The proportion of type I muscle fibres increased from 38 (range 32-42) to 74 (range 66-78) per cent after 12 weeks of conditioning. CONCLUSION: This pilot study demonstrated the feasibility of a continent stoma in an animal model with a dynamic rectus neosphincter. Long-term results should be confirmed in a larger series before use in humans can be considered.