Gagnon R, Hunse C, Carmichael L, Fellows F, Patrick J
Am J Obstet Gynecol. 1987 Feb;156(2):323-7. doi: 10.1016/0002-9378(87)90276-6.
Twenty-five pregnant women between 36 and 40 weeks' gestational age were studied to examine effects of a 5-second external vibratory acoustic stimulus on the fetal heart rate and fetal heart rate variability. There was an immediate significant increase in the basal heart rate, which persisted for 1 hour after the stimulus, compared to that of the control subjects. There was also a significant increase in the total time during which accelerations occurred for the first 20 minutes after the stimulus. There were no changes in computer-derived indices of fetal heart rate variability. Maternal blood pressure and heart rate were not altered following vibratory acoustic stimulus. We hypothesize that external vibratory acoustic stimulus causes a change from a state of sleep to a state of wakefulness in near term healthy fetuses.
对25名孕龄在36至40周之间的孕妇进行了研究，以检查5秒的外部振动声刺激对胎儿心率和胎儿心率变异性的影响。与对照组相比，基础心率立即显著增加，并在刺激后持续1小时。刺激后最初20分钟内加速发生的总时间也显著增加。胎儿心率变异性的计算机衍生指标没有变化。振动声刺激后，孕妇的血压和心率没有改变。我们假设外部振动声刺激会使近期健康胎儿从睡眠状态转变为清醒状态。
