Levator trauma (ballooning) often occurs after vaginal delivery. Platelet rich plasma injection after delivery showed reduced hiatal area and maintain levator muscle strength.
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Changes of Levator Hiatal Area During Valsava
Timeframe: Baseline (third trimester), 40 days post-partum, 3 months post-partum
Changes in Pelvic Floor Muscle Contraction
Timeframe: Baseline (third trimester), 40 days post partum, and 3 months post partum