, Volume 276, Issue 2, pp 133-138
Date: 07 Feb 2007

Does water delivery affect pelvic floor? Ultrasound evaluation of perineal function

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The aim of the study is to analyse urethral mobility and excursion of the pubo-rectal angle, using perineal ultrasound, after normal vaginal delivery and water delivery.

Materials and methods

A total of 52 primiparous women were enrolled: 25 who had delivery in water (W Group), 27 who had delivery without using water (NW Group). Every woman underwent perineal ultrasound assessment at 6 months after having given birth. The following parameters were assessed: urethral mobility during Valsalva’s manoeuvre, movement of the pubo-rectal sling angle during contraction of the levator ani muscle.


Data obtained show that the urethral mobility during Valsalva’s manoeuvre is higher in the W Group (34.9°) in comparison to the NW Group (29.5°), without statistically significant differences. The excursion of the pubo-rectal sling angle resulted lower in the W Group (8.7°) than in the NW Group (11.0°), without statistically significant differences.


The present study found no statistically differences in pelvic floor, using perineal ultrasound, between water and “non-water” delivery.