Myoelectric and Manometric Patterns of Human Rectosigmoid Colon in Irritable Bowel Syndrome and Diverticulosis

M. Katschinski Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

P. Lederer Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

A. Ellermann Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

R. Ganzleben Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

G. Lux Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

R. Arnold Dept. of Internal Medicine, University of Marburg, Marburg; Dept. of Internal Mediciney, University of Erlangeny, Erlangen, FRG

Abstract

Rectosigmoid electric control activity and intraluminal pressure were measured in the fasting state and after a standard 3040-kJ meal in irritable bowel syndrome (IBS) patients (n = 41), diverticulosis patients (n = 15), and healthy controls (n = 13). Analysis of myoelectric and motor patterns was performed computer-based with home-made software. Spectral analysis (fast Fourier transform) and computer recognition of slow waves emulating visual scoring showed very similar slow-wave frequency patterns in all three groups. Calculation of contractile indices displayed a widely scattered variable of motility in all three groups without significant differences. IBS subgroups with different bowel patterns showed very similar frequencies of basic myoelectric rhythm and a considerable overlap of contractile activity without significant differences among the subgroups and compared with controls. Slow-wave rhythm seems unlikely to be the basis of disturbed motility in IBS and diverticular disease. A specific pattern of contractile activity was not detectable in either condition.

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Myoelectric and Manometric Patterns of Human Rectosigmoid Colon in Irritable Bowel Syndrome and Diverticulosis

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Myoelectric and Manometric Patterns of Human Rectosigmoid Colon in Irritable Bowel Syndrome and Diverticulosis

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