Manometric studies of anorectal disorders in infancy and childhood: an investigation of the physiopathology of continence and defaecation.

Anorectal manometry was performed on 126 infants and children with anorectal dosorders. In addition, 14 normal children were studied. Pressure measurements were taken with two perfused open-tip catheters. The activity of the external and internal balloon was used to distend the rectal ampulla with air.