Abstract
The purpose of this study was to investigate the relationships between the grade of anal sphincter rupture, anal sphincter defect, manometry variables, and anal incontinence. A total of 132 females with first-time obstetric sphincter rupture were evaluated by transanal ultrasound, manometry, and scoring of bowel symptoms five months after delivery. Anal sphincter rupture and transanal ultrasound grade correlated with each other ( rs= 0.427, P= 0.001). Both rupture and transanal ultrasound grade correlated with soiling grade ( rs= 0.2, P= 0.03 for both), but in a multiple regression analysis, only transanal ultrasound grade was significant ( P= 0.001) as an independent variable. Anal incontinence score correlated with all the manometry variables, but in a multiple regression analysis, only squeeze pressure was significant ( P= 0.001, beta = -0.4) as an independent variable. Both anal sphincter rupture and transanal ultrasound grade were correlated with manometry variables, but only transanal ultrasound grade was significant as an independent variable after multiple regression analysis. The frequency of transanal ultrasound-verified extensive defect of anal sphincter was higher in rupture Grade 3B (25; 95 percent confidence interval, 12-38 percent) and Grade 4 (45; 95 percent confidence interval, 24-66 percent) than in Grade 3A (2.8; 95 percent confidence interval, -1 to -6.6 percent).(s) (s)CONCLUSION Manometry variables are significantly lower in incontinent females than in continent females, and the Wexner incontinence score was correlated with manometry variables. Both anal sphincter rupture and transanal ultrasound grade correlated with soiling grade and with manometry variables, but in both cases only the transanal ultrasound grade was a significant independent variable.
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