American journal of obstetrics and gynecology
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Am. J. Obstet. Gynecol. · Nov 1992
Randomized Controlled Trial Comparative Study Clinical TrialChanges in coagulation and anticoagulation in women taking low-dose triphasic oral contraceptives: a controlled comparative 12-month clinical trial.
The effects of two triphasic oral contraceptives on coagulation and anticoagulation factors were compared in a 12-month open-label study. ⋯ Levonorgestrel plus ethinyl estradiol and norethindrone plus ethinyl estradiol had equivalent, minimal effects on hemostasis, and changes in coagulation factors appeared to be balanced by changes in anticoagulation factors.
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Am. J. Obstet. Gynecol. · Nov 1992
Changes in pupillary diameter in relation to eye-movement and no-eye-movement periods in the human fetus at term.
The aim of our study was to reveal whether pupils dilate and constrict in a time sequence in the human fetus and to assess the relationship between changes in pupillary diameter and eye-movement-no-eye-movement periods. ⋯ These findings indicate a close relation between pupillary dilatation and eye-movement periods in the human term fetus.
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Am. J. Obstet. Gynecol. · Nov 1992
Does DeLee suction at the perineum prevent meconium aspiration syndrome?
We attempted to determine the impact of "early" (before delivery of the chest) oronasopharyngeal DeLee suctioning at the perineum in the prevention of meconium aspiration syndrome and to confirm that meconium aspiration syndrome is a postnatal event. ⋯ We concluded that "early" oronasopharyngeal DeLee suctioning at the perineum does not affect the rate of meconium aspiration syndrome. We speculate that meconium aspiration syndrome is predominantly an intrauterine event associated with fetal distress and that meconium in the airways is merely a "marker" of previous fetal hypoxia.
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Am. J. Obstet. Gynecol. · Nov 1992
Umbilical venous pressure in nonimmune hydrops fetalis: correlation with cardiac size.
Our objectives were to examine the relationship between umbilical venous pressure and cardiac size in nonimmune hydrops fetalis and to assess the role of cardiac failure in the pathogenesis of the disease. ⋯ Measurement of umbilical venous pressure validates cardiothoracic ratio as a noninvasive assessment of cardiac function in nonimmune hydrops.