Jr. Wax et al., INTRAPARTUM FETAL ATRIAL BIGEMINY - DIAGNOSTIC AND THERAPEUTIC ROLE OF THE FETAL SCALP STIMULATION TEST, American journal of obstetrics and gynecology, 174(5), 1996, pp. 1649-1650
Concern for fetal hypoxia often leads to cesarean delivery when persis
tent fetal bradycardia is identified. A fetus with premature atrial co
ntractions had a prolonged second-stage heart rate of 80 beats/min. In
trapartum echocardiography and electronic fetal heart rate monitoring
distinguished bradycardia caused by blocked atrial bigeminy from hypox
ic bradycardia. The fetal scalp stimulation test documented normal aci
d-base balance and normalized the ventricular rate, avoiding cesarean
delivery.