Ano-rectal activity in man during rectal infusion of saline: a dynamic assessment of the anal continence mechanism.


1. Anal and rectal pressures and the external anal sphincter electromyogram were recorded in eighteen normal subjects at rest and during rectal infusion of 1500 ml. saline at a rate of 60 ml./min. 2. During saline infusion, the recordings described a pattern of regular relaxations of the internal sphincter associated with contractions of the rectum and the… (More)


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