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|Anorectal manometry is performed to objectively assess the apparatus and defecation provided by the anal sphincter. With anorectal manometry, you can measure resting and squeeze pressure, as well as the length of the functional anal canal. More detailed assessment of radial and longitudinal pressure profiles can be obtained from a vector volume plot. With use of an intra-rectal balloon it is also possible to assess the recto-anal inhibitory reflex (RAIR), rectal sensitivity, capacity and compliance.
Video cine-loops can be used for defecography. The defecation proces is recorded during the investigation and can be viewed during analysis.