Correlation of Postpartum Pelvic Floor Dysfunction with Contractility of Pelvic Floor Muscles and Related Factors

Objective: To analyze the correlation of postpartum pelvic floor dysfunction with the contractility of pelvic floor muscles and related factors. Methods: A cohort of 102 patients in postpartum 42-60 days with symptoms of pelvic floor dysfunction,including 66 of postpartum urinary incontinence( UI) and 36 of pelvic organ prolapsed( POP),were recruited. 100 postpartum women with normal pelvic floor function were recruited as a control group. A questionnaire survey was conducted for the general situation of the subjects. The correlation of postpartum pelvic floor dysfunction and contractility of pelvic floor muscles was determined through the electromyographic recording of pelvic floor,measuring the sustained and rapid contractility as the function of pelvic floor class Ⅰ and Ⅱ muscle,respectively. Results: 1The age,pre-delivery body mass index,newborn baby weight,vaginal birth rate and a history of abdominal pressure in the study group were significantly higher than those in the control group( P 0. 05; P 0. 01). 2Both the sustained and rapid contractilities of pelvic floor muscle in the study group were significantly lower than those in the control group( P 0. 01). 3The rapid contractility in UI patients was significantly lower than that in POP patients and control group( P 0. 01),and the sustained contractility in POP patients was significantly lower than that in UI patients and control group( P 0. 01). Conclusions: Age,pre-delivery BMI,newborn body weight,and vaginal delivery,may be related factors of postpartum pelvic floor dysfunction. The postpartum pelvic floor dysfunction may be associated with the declined contractility of pelvic floor muscle,especially the POP with class I muscle,and the UI with class II muscle.