Three-dimensional pressure profilometry of the anal sphincter.
Single channel manometry is of limited value in determining the cause of sphincter dysfunction. This is due mainly to the recording variability caused by radial pressure asymmetry. Multi-channel manometry does not have this disadvantage, but is complicated and difficult to interpret. We report on computerized eight-channel manometry which permits three-dimensional reconstruction of the sphincter. Fifteen subjects were measured. At rest, lower pressures were recorded in the left, left-dorsal, and dorsal directions. Sphincter length was shortest in the right direction and ventral directions. The graphic reconstruction showed marked indentations in the right- and right anterior direction, and one indentation on the opposite side. At maximal squeeze the graphic reconstruction showed the same indentations, but they were more pronounced. In conclusion, computerized eight-channel manometry proved to be an efficient technique which could be routinely applicable. The graphic reconstruction provides insight into radial and axial pressure asymmetry.
van der Hulst
V P
VP
Department of Surgical Research, Academic Medical Center, University of Amsterdam.
Bemelman
W A
WA
Dijkhuis
T
T
Klopper
P J
PJ
D000293:Adolescent; D000328:Adult; D001003:Anal Canal / Q000502:physiology*; D003196:Computer Graphics; D006801:Humans; D008297:Male; D008365:Manometry / Q000379:methods*; D011312:Pressure; D012815:Signal Processing, Computer-Assisted