Does the umbilical artery systolic/diastolic ratio reflect flow or acidosis? An umbilical artery Doppler study of fetal sheep

We studied four fetal sheep at 114 to 139 days' gestation to evaluate the effect of acute placental embolization on placental perfusion, fetal oxygenation and acid-base status, and the umbilical artery systolic/diastolic ratio. Studies were performed after maternal anesthesia was induced in an...

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Veröffentlicht in:	American journal of obstetrics and gynecology 1990-09, Vol.163 (3), p.751-756
Hauptverfasser:	Copel, J A, Schlafer, D, Wentworth, R, Belanger, K, Kreitzer, L, Hobbins, J C, Nathanielsz, P W
Format:	Artikel
Sprache:	eng
Schlagworte:	Acidosis - physiopathology Animals Blood Flow Velocity Diastole Female Hydrogen-Ion Concentration Myocardial Contraction Pregnancy Regional Blood Flow Sheep Systole Ultrasonography Umbilical Arteries - physiology Vascular Resistance
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