Acta obstetricia et gynecologica Scandinavica
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Acta Obstet Gynecol Scand · May 2021
Comparative StudyFetal heart rate nadir during bradycardia and umbilical artery acidemia at birth.
Fetal bradycardia due to sentinel events such as placental abruption, cord prolapse or uterine rupture is associated with an increased risk of acidemia at birth. In the absence of a sentinel event, data regarding neonatal prognosis are scarce, and it seems plausible that the depth of bradycardia might be associated with an increased risk of acidosis at birth. The objective was to determine whether the depth of bradycardia is associated with a higher risk of umbilical artery acidemia at birth in term singleton pregnancies requiring cesarean delivery during labor. ⋯ A bradycardia nadir <60 bpm was associated with a tripled risk of umbilical artery acidemia at birth.