The transition phase of labor.
D000698:Analgesia; D002584:Cervix Uteri / Q000502:physiology; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D009321:Natural Childbirth; D009773:Obstetric Nursing; D010290:Parents; D010348:Patient Care Team; D011247:Pregnancy; D012119:Respiration