Ohel G, Samueloff A, Navot D, Sadovsky E
Am J Obstet Gynecol. 1985 Jul 15;152(6 Pt 1):686-7. doi: 10.1016/s0002-9378(85)80048-x.
The rate of fetal heart rate accelerations associated with fetal movements to total fetal movements of twin pregnancies was found to be significantly lower than that of pregnancies with singleton infants. The number of fetal heart rate accelerations was similar. As fetal heart rate accelerations are reflective of fetal movements, the results indicate increased fetal activity in twins that is related to an additive effect of two normally active fetuses.
与胎动相关的双胎妊娠胎儿心率加速率与单胎妊娠相比显著降低。胎儿心率加速的次数相似。由于胎儿心率加速反映胎动情况，结果表明双胎妊娠中胎儿活动增加，这与两个正常活跃胎儿的累加效应有关。
