Manometric diagnosis of anal sphincter injuries.
ABSTRACT A manometric technique of anal pressure vectography has been developed for the detection of anal sphincter injuries. Manometric symmetry of the anal sphincter can be visualized on the pressure vectorgram and quantified as a vector symmetry index. The mean vector symmetry index in asymptomatic women was 0.76, compared with 0.33 in incontinent women with a known sphincter injury (p = 0.0001). Among women who were incontinent without having a recognized sphincter injury, nearly half of those who had a previous episiotomy had subnormal (less than 0.60) vector symmetry indices (p = 0.0003). The values were in the same range as those from known injuries, suggesting the presence of an occult sphincter injury. In contrast, normal symmetry indices were found in all those who had never had an episiotomy or who presented with outlet constipation. We conclude that the vector symmetry index can expose occult anal sphincter injuries and may have a role in the selection of patients for sphincter repair.
- SourceAvailable from: uni-muenchen.de
Article: Episiotomie bei der vaginalen Geburt
- [Show abstract] [Hide abstract]
ABSTRACT: The general tester design concepts for the proposed Component Test Facility cover basic design requirements for the high-speed camera testing areas and the single-point tester area. The three large test cells in this facility will withstand blast effects from ten-pound TNT equivalent detonations. The basic test systems associated with these test cells will be automatic computer control systems capable of analyzing the test data they acquire. A major concern in this design of the test systems is safety for both personnel and equipment. Several factors have been considered and special systems will be built to provide safeguards against accidents. The Component Test Facility was submitted as a 1984 line item; completion is scheduled for the fourth quarter of 1986.