Gagnon R, Hunse C, Carmichael L, Fellows F, Patrick J
Department of Obstetrics and Gynecology, St. Joseph's Hospital Research Institute, London, Ontario, Canada.
Am J Obstet Gynecol. 1987 Dec;157(6):1375-81. doi: 10.1016/s0002-9378(87)80227-2.
Eighty-three healthy pregnant women between 26 and 40 weeks' gestational age were studied to examine effects of a 5-second external vibratory acoustic stimulus on the fetal heart rate, fetal breathing, and gross fetal body movement patterns. There was an immediate fetal heart rate response, following stimulus, characterized by an increase in duration of fetal heart rate accelerations from 26 weeks to term with an increase in basal fetal heart rate after 30 weeks. There was also a delayed response after 33 weeks' gestation, which consisted of an increase in the number of fetal heart rate accelerations and the incidence of gross fetal body movements for up to 1 hour after a 5-second stimulus with the electronic artificial larynx. Term (36 to 40 weeks) fetuses made breathing movements more irregularly after vibratory acoustic stimulation. We suggest that human fetal responses to stimulation with the electronic artificial larynx may reflect a functional maturation of the fetal central nervous system.
对83名孕龄在26至40周的健康孕妇进行了研究，以检查5秒的外部振动声学刺激对胎儿心率、胎儿呼吸和胎儿大体身体运动模式的影响。刺激后胎儿心率立即出现反应，其特征是胎儿心率加速持续时间从26周增加至足月，且30周后基础胎儿心率增加。妊娠33周后也出现延迟反应，即在使用电子人工喉进行5秒刺激后，胎儿心率加速次数和胎儿大体身体运动发生率增加，持续长达1小时。足月（36至40周）胎儿在振动声学刺激后呼吸运动变得更加不规律。我们认为，人类胎儿对电子人工喉刺激的反应可能反映了胎儿中枢神经系统的功能成熟。
