title: Total uterine impulse and cervical resistance at parturition.
abstract: Resistance to the passage of the fetus during parturition has been estimated indirectly by calculation of the active contraction area during the first stage of labor until the cervix reaches a dilatation of 5 cm--the period of cervical resistance. Parturients with a high total uterine impulse in this period were studied. Two different patterns of cervical resistance with corresponding clinical pictures were found. Type I had a high frequency of cesarean sections with a good correlation to the resistance. With high resistance there also was a tendency to low Apgar scores at 1 minute. Type II had normal 1 minute Apgar scores and only vaginal deliveries.
mesh_terms: D001034:Apgar Score; D002584:Cervix Uteri / Q000502:physiology*; D002585:Cesarean Section; D036861:Delivery, Obstetric / Q000379:methods; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007743:Labor, Obstetric; D011247:Pregnancy; D013997:Time Factors; D014590:Uterine Contraction