Stopped: The study will not proceed due to lack of funding.
The aim of this observational study is to learn about how muscle dimensions of the pelvic floor measured during pregnancy in primigravida impact birth mecanics and mode of delivery. Tha main aims are to 1. Explore associations between mode of delivery and hiatal dimensions measured by transperineal ultrasound antenatally and 2. Explore the association between duration of 2nd stage of labour and hiatal dimensions. A pelvic floor ultrasound examination will be performed between pregnancy week 12 and 20 and levator ani muscle hiatal dimensions will be compared between women having a normal vaginal delivery and women with emergency cesarean or operative vaginal deliveries.
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Mode of delivery
Timeframe: Assessed at 1 day of childbirth
Levator hiatal dimensions
Timeframe: Measured in pregnancy week 12
Levator hiatal dimensions
Timeframe: Measured in pregnancy week 18