Paradoxical sphincter contraction is rarely indicative of anismus.

  title={Paradoxical sphincter contraction is rarely indicative of anismus.},
  author={Winfried A. Voderholzer and Dirk Neuhaus and Andreas Klauser and K Tzavella and Stefan A. M{\"u}ller-Lissner and Norbert E. Schindlbeck},
  volume={41 2},
BACKGROUND Anismus is thought to be a cause of chronic constipation by producing outlet obstruction. The underlying mechanism is paradoxical contraction of the anal sphincter or puborectalis muscle. However, paradoxical sphincter contraction (PSC) also occurs in healthy controls, so anismus may be diagnosed too often because it may be based on a non-specific finding related to untoward conditions during the anorectal examination. AIMS To investigate the pathophysiological importance of PSC… CONTINUE READING


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