American journal of obstetrics and gynecology
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Am. J. Obstet. Gynecol. · Aug 1986
Case ReportsThrombolytic therapy for pulmonary embolism in pregnancy: a case report.
A case of a 19-year-old woman whose pregnancy was complicated by hemodynamically significant pulmonary thromboemboli is reported. The diagnosis was confirmed by radionuclide ventilation-perfusion lung scanning, and urokinase thrombolytic therapy resulted in a good therapeutic response with minimal adverse effects.
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Am. J. Obstet. Gynecol. · Jul 1986
Functional development of human eye movement in utero assessed quantitatively with real-time ultrasound.
Functional development of eye movement in the human fetus in utero was assessed quantitatively, with real-time ultrasound. A pair of lens-derived echoes was used as a landmark to evaluate positional deviation with eye movement. The frequency of eye movement was measured either with 1-minute continuous observations or at 1-minute cross sections. ⋯ Three critical ages, with respect to physiologic development of fetal eye movements, were evident: 22 to 25, 30 to 33, and 38 to 41 weeks. The first and the second indicate the onset of the moderate-frequency and high-frequency eye movements, thereby implying a transition, presumably to a state of so-called rapid eye movement and a rise of rapid eye movement, respectively. The third represents full maturation of the mechanisms, that is, non-rapid eye movement and rapid eye movement.
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Am. J. Obstet. Gynecol. · Apr 1986
Comparative StudyCesarean delivery of the second twin after vaginal delivery of the first twin.
Cesarean birth of twin B after the vaginal delivery of twin A is an infrequent event. There is little information in the literature documenting outcome of vaginal-abdominal delivery. ⋯ Twenty-one cases of combined vaginal-cesarean section deliveries were managed at our institute in a 10-year period. There was no apparent increase in maternal and perinatal morbidity and mortality when twin B was delivered by cesarean section after vaginal delivery of twin A.
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Am. J. Obstet. Gynecol. · Apr 1986
Electrocardiographic changes associated with ritodrine-induced maternal tachycardia and hypokalemia.
One hundred twelve patients in preterm labor were followed prospectively, with electrocardiograms taken before ritodrine therapy and at 6 and 24 hours of treatment. Ninety-six percent of patients developed sinus tachycardia. Other changes were seen in 79% of the study group. ⋯ A drop in potassium concentration was noted initially, but a direct correlation between potassium concentrations and frequency of electrocardiographic changes was not present. We conclude that the electrocardiographic changes that are often observed during myocardial ischemia may be frequent in asymptomatic patients treated with ritodrine and that these changes may be a physiologic expression of ritodrine-induced tachycardia or hypokalemia. The validity of the use of the presence of electrocardiographic changes as the only criterion for discontinuation of ritodrine therapy is questioned.