comparison of grouped mean 30-minute values before and after vibratory acoustic stimulation showed significant increases in baseline fetal heart rate , fetal heart rate variation , frequency of accelerations exceeding 10 and 15 beats/min , duration of accelerations exceeding 15 beats/min , and frequency of decelerations after vibratory acoustic stimulation .
C0429477
baseline fetal heart rate
C0018811
fetal heart rate