American journal of obstetrics and gynecology
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Am. J. Obstet. Gynecol. · Nov 1997
Predictive factors for neonatal morbidity in neonates with an umbilical arterial cord pH less than 7.00.
Fewer than 50% of neonates with an umbilical arterial pH < 7.00 have neonatal complications. Our objective was to identify clinical predictive factors for adverse outcomes in this group of neonates. ⋯ Neonatal morbidity in neonates with an umbilical arterial cord pH < 7.00 can be predicted by a high arterial base deficit value and low 5-minute Apgar score.
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Am. J. Obstet. Gynecol. · Nov 1997
Fetoplacental vascular tone during fetal circuit acidosis and acidosis with hypoxia in the ex vivo perfused human placental cotyledon.
Our purpose was to determine the effects of acidosis and acidosis-hypoxia on fetoplacental perfusion pressure and its response to angiotensin II. ⋯ In the perfused placental cotyledon fetoplacental perfusion pressure and pressor response to angiotensin II are not affected by fetal circuit acidosis or acidosis-hypoxia. This suggests that neither fetal acidosis nor fetal acidosis combined with hypoxia has a direct effect on fetoplacental vascular tone.
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Am. J. Obstet. Gynecol. · Nov 1997
Identifying twin gestations at low risk for preterm birth with a transvaginal ultrasonographic cervical measurement at 24 to 26 weeks' gestation.
Because twins are a high-risk group for preterm birth, many clinicians routinely use prophylactic interventions such as home bed rest, hospital bed rest, oral tocolytics, or home uterine activity monitoring to prevent preterm delivery. We sought to identify twin gestations at low risk for spontaneous preterm birth with transvaginal ultrasonography of the cervix to avoid the unnecessary use of prophylactic interventions in these pregnancies. ⋯ A transvaginal ultrasonographic measurement of the cervix of > 35 mm at 24 to 26 weeks in twin gestations can identify patients who are at low risk for delivery before 34 weeks' gestation.
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Am. J. Obstet. Gynecol. · Oct 1997
Randomized Controlled Trial Clinical TrialControlled cord traction versus minimal intervention techniques in delivery of the placenta: a randomized controlled trial.
Our purpose was to compare the controlled cord traction technique with the minimal intervention technique for delivery of the placenta. The primary outcome was the incidence of postpartum hemorrhage. Secondary outcomes included duration of third stage of labor, frequency of retained placenta, hemorrhagic shock, the need for blood transfusion, and the need for uterotonic agents to control postpartum hemorrhage. ⋯ The controlled cord traction technique for delivery of the placenta results in a significantly lower incidence of postpartum hemorrhage and retained placenta, as well as less need for uterotonic agents, compared with the minimal intervention technique.
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Am. J. Obstet. Gynecol. · Oct 1997
The quality of citations in major international obstetrics and gynecology journals.
Our goal was to determine the error rate in references in articles published in three major international journals in obstetrics and gynecology. ⋯ Error rates in major international journals in obstetrics and gynecology are high, and care must be taken by authors and journal staff to improve the quality of published articles.