The usual suspect: cross-sectional study of fundal pressure at second stage of delivery and the association with pelvic floor damage

Introduction and hypothesis Uterine fundal pressure is applied to accelerate birth by increasing the expulsive force of the uterus in the second stage of delivery. The aim of the study was to evaluate the effect of using uterine fundal pressure during the second stage of delivery on the rate of pelvic floor damage among primiparous women using three-dimensional transperineal ultrasonography. Methods The women were divided into two groups: the fundal pressure group included women where the fundal pressure maneuver was applied ( n = 39); the control group included women who delivered spontaneously without fundal pressure ( n = 47). 3D-TPU was performed within 48 h of delivery, and LAM biometry, LAM defect and loss of tenting were determined. Results Anteroposterior hiatal dimensions on resting, maximal Valsalva and maximal PFMC were found to be higher in the fundal pressure group ( p