Objective  To investigate the early pelvic floor function of primiparas in postpartum period, and to analyze the influencing factors of early postpartum stress urinary incontinence.

  Methods  A total of 811 primiparas who underwent screening for pelvic floor dysfunction were selected as the research subjects. The results of maternal screening and the factors that might affect early postpartum stress urinary incontinence were collected. According to whether postpartum stress urinary incontinence was present or not, the puerperas were divided into early stress urinary incontinence group (n=71) and no early stress urinary incontinence group (n=740). The above factors were compared between the two groups, and multivariate Logistic regression was used to analyze the related influencing factors of early postpartum stress urinary incontinence in primiparas.

  Results  Among 811 parturients, 132 cases (16.28%) had early pelvic floor dysfunction, including 71 cases (8.75%) of stress urinary incontinence, 43 cases (5.30%) of pelvic floor organ prolapse, and 18 cases (2.22%) of bladder neck displacement. Older age, pre-pregnancy body mass index (BMI) increase, pregnancy urinary incontinence, perineal lateral resection, neonatal body weight increase and prolonged time of the second stage of labor were the risk factors for early postpartum stress urinary incontinence of primiparas, cesarean section and pregnancy rectus training were the protective factors (P < 0.05).

  Conclusion  The incidence of pelvic floor dysfunction in the early postpartum period is high in the primary parturients, mainly causing stress urinary incontinence. The stress urinary incontinence of primiparas in this area is related to maternal age, pre-pregnancy BMI and other factors, and targeted intervention can be carried out clinically in order to reduce the incidence of early stress urinary incontinence after delivery.