Amniotomy during the active phase of labor.
D000328:Adult; D000650:Amnion / Q000601:surgery*; D000653:Amniotic Fluid; D005260:Female; D005865:Gestational Age; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D013223:Statistics as Topic; D013997:Time Factors