Department of Perinatology and Gynecology, Kagawa University School of Medicine, Kagawa, Japan.
Int J Gynaecol Obstet. 2010 Jun;109(3):190-3. doi: 10.1016/j.ijgo.2009.12.020. Epub 2010 Mar 5.
To evaluate, using four-dimensional (4D) sonography, the frequency of fetal movements during the late first trimester of normal singleton pregnancies.
Singleton pregnancies were studied-using transvaginal 4D sonography-for 10 minutes at 10-11 and 12-13 weeks of gestation. The frequencies of 5 fetal movements (isolated arm, isolated leg, short trunk, long trunk, and jumping movements) were evaluated.
In the 17 pregnancies studied, the most frequent fetal movements were isolated arm movement at 10-11 weeks and jumping movement at 12-13 weeks. There was a significant difference in the frequency of jumping movement between 10-11 and 12-13 weeks (P<0.05).
The difference in frequency of 5 fetal movements at 10-11 and 12-13 weeks of gestation may be caused by early neuromuscular development and differentiation of the neuromuscular system.
使用四维（4D）超声评估正常单胎妊娠晚期 10-11 周和 12-13 周时的胎儿运动频率。
对 17 例单胎妊娠进行经阴道 4D 超声检查，在妊娠 10-11 周和 12-13 周时各检查 10 分钟。评估 5 种胎儿运动（孤立手臂运动、孤立腿部运动、短躯干运动、长躯干运动和跳跃运动）的频率。
在研究的 17 例妊娠中，最常见的胎儿运动是 10-11 周时的孤立手臂运动和 12-13 周时的跳跃运动。10-11 周和 12-13 周时跳跃运动的频率有显著差异（P<0.05）。
妊娠 10-11 周和 12-13 周时 5 种胎儿运动频率的差异可能是由早期神经肌肉发育和神经肌肉系统的分化引起的。
