Timor-Tritsch I E, Dierker L J, Hertz R H, Chik L, Rosen M G
Early Hum Dev. 1980 Sep;4(3):315-24. doi: 10.1016/0378-3782(80)90034-1.
Fetal respiratory movements (FRM) were studied using abdominal strain gauges (tocodynamometers). The patterns of the FRM were evaluated during both active and quiet fetal time periods, which were determined by the fetal heart rate (FHR) and fetal body movement (FM). The FRM were classified into Regular and Irregular patterns based on neonatal respiratory criteria for sleep-state studies in the term infant. Evaluation of the breath-to-breath intervals (BBI) showed statistically significant respiratory differences during active and quiet fetal time periods. Irregular fetal respiratory movement patterns were noted during fetal active periods. It would appear that the correlation of regular fetal respiratory movement with fetal quiet periods in the term fetus adds additional evidence that a quiet sleep state may exist in the term fetus.
使用腹部应变计（宫缩计）研究胎儿呼吸运动（FRM）。在活跃和安静的胎儿时期评估FRM的模式，这两个时期由胎儿心率（FHR）和胎儿身体运动（FM）确定。根据足月儿睡眠状态研究的新生儿呼吸标准，将FRM分为规则和不规则模式。对呼吸间隔（BBI）的评估显示，在活跃和安静的胎儿时期存在统计学上显著的呼吸差异。在胎儿活跃期观察到不规则的胎儿呼吸运动模式。足月胎儿中规则的胎儿呼吸运动与胎儿安静期的相关性似乎进一步证明了足月胎儿可能存在安静睡眠状态。
