Pelvic floor function of 5 143 women in early postpartum stage and analysis on the effect factors

Objective To describe the situation of early stage of pelvic floor function and investigate the effect factors in postpartum women. Methods A retrospective survey was conducted, and women who did regular examination and gave birth in Peking University People′s Hospital and had an annual pelvic floor examination at 6-12 weeks after delivery from Sep. 2012 to Dec. 2017 were interviewed. General information and pelvic floor electrical physiological indexes were collected and analyzed. Results Totally 5 143 puerpera were included in the study. The normal strength of type Ⅰ muscle was 52.40% (2 695/5 143) and the normal strength of type Ⅱ muscle was 52.69% (2 710/5 143). The abnormal degree of fatigue of type Ⅰ muscle was 55.84% (2 872/5 143) and the abnormal degree of fatigue of typeⅡmuscle was 27.34% (1 406/5 143). Pelvic floor dynamic pressure was (93±37) cmH2O (1 cmH2O=0.098 kPa). The incidence of stress urinary incontinence (SUI) was 23.49% (1 208/5 143) after delivery and it was as high as 57.58% (95/165) for women who had family history of pelvic floor dysfunction. Family history of pelvic floor dysfunction was the risk factor of the fatigue index of type Ⅰ and type Ⅱ muscle (P<0.05). The incidence of SUI was associated with vaginal delivery and age (≥30 years old) and family history of pelvic floor dysfunction (P<0.01). Conclusions Pelvic floor electrical physiological indicators are reduced in about half of women in early postpartum stage. Age (≥30 years old) and vaginal delivery and family history of pelvic floor dysfunction are the risk factors. Key words: Postpartum peroid; Pelvic floor; Electrophysiology; Pelvic floor disorders