TY - JOUR
T1 - Fetal heart rate response to vibroacoustic stimulation during low and high heart rate variability episodes in late pregnancy
AU - Spencer, John A.D.
AU - Deans, Anne
AU - Nicolaidis, Peter
AU - Arulkumaran, Sabaratnam
PY - 1991
Y1 - 1991
N2 - In 52 women in late pregnancy, the mean durations of transient fetal tachycardia after vibroacoustic stimulation during low fetal heart rate variability (4.8 minutes) and high fetal heart rate variability (6.3 minutes) were similar. The fetal heart rate continued with high variability in all cases, suggesting that the fetus did not return to its prestimulation state after vibroacoustic stimulation during quiescence. In 10 women, the duration of high variability after vibroacoustic stimulation during low fetal heart rate variability was significantly shorter (mean, 22 minutes) than the preceding (mean, 36 minutes) or subsequent (mean, 43 minutes) high-variability components of complete rest activity cycles. In another 10 women, the duration of high variability after vibroacoustic stimulation during high fetal heart rate variability was similar to preceding and subsequent high-variability episodes. In these 20 women, the next complete rest-activity cycle after vibroacoustic stimulation was not different in duration to the complete cycle recorded on the previous day.
AB - In 52 women in late pregnancy, the mean durations of transient fetal tachycardia after vibroacoustic stimulation during low fetal heart rate variability (4.8 minutes) and high fetal heart rate variability (6.3 minutes) were similar. The fetal heart rate continued with high variability in all cases, suggesting that the fetus did not return to its prestimulation state after vibroacoustic stimulation during quiescence. In 10 women, the duration of high variability after vibroacoustic stimulation during low fetal heart rate variability was significantly shorter (mean, 22 minutes) than the preceding (mean, 36 minutes) or subsequent (mean, 43 minutes) high-variability components of complete rest activity cycles. In another 10 women, the duration of high variability after vibroacoustic stimulation during high fetal heart rate variability was similar to preceding and subsequent high-variability episodes. In these 20 women, the next complete rest-activity cycle after vibroacoustic stimulation was not different in duration to the complete cycle recorded on the previous day.
KW - fetal behavioral cycles
KW - fetal heart rate variability
KW - Vibroacoustic stimulation
UR - http://www.scopus.com/inward/record.url?scp=0025871639&partnerID=8YFLogxK
U2 - 10.1016/0002-9378(91)90230-O
DO - 10.1016/0002-9378(91)90230-O
M3 - Article
C2 - 1853923
AN - SCOPUS:0025871639
SN - 0002-9378
VL - 165
SP - 86
EP - 90
JO - American Journal of Obstetrics and Gynecology
JF - American Journal of Obstetrics and Gynecology
IS - 1
ER -