[Measuring fetal vascular resistance with the Duplex scanner--a new fetal stress test].
In 77 women (phi 41 week, less than 7 days before delivery) we compared the resistance index (RI) in the umbilical artery (UA), descending aorta (DA) and intracranial artery (ICA) with an oxytocin challenge test (OCT) and a non stress test (NST). Proof criterias were asphyxia resulting in operative deliveries and metabolic acidosis. The sensitivity in predicting metabolic acidosis was low in all tests, but a high and comparable specificity could be achieved in both the RI and OCT. In predicting fetal asphyxia the RI in the ICA had a high sensitivity, the RI in the UA and DA had the highest specificity of all tests. Centralisation and increased brain perfusion seem to detect fetal asphyxia as a result of placental insufficiency.
Schneider
K T
KT
Frauenklinik rechts der Isar der TU München.
Loos
W
W
Hassler
A
A
Graeff
H
H
D000138:Acidosis / Q000175:diagnosis; D001238:Asphyxia Neonatorum / Q000175:diagnosis*; D002560:Cerebrovascular Circulation / Q000187:drug effects; D002585:Cesarean Section; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009131:Muscle, Smooth, Vascular / Q000187:drug effects; D010121:Oxytocin; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D011446:Prospective Studies; D012307:Risk Factors; D014463:Ultrasonography / Q000379:methods*; D014655:Vascular Resistance / Q000187:drug effects*
D010121:Oxytocin
Die Messung des fetalen Gefsswiderstandes mit dem Duplexscanner--ein neuer fetaler Stresstest.