Griffin R L, Caron F J, van Geijn H P
Am J Obstet Gynecol. 1985 Aug 1;152(7 Pt 1):828-33. doi: 10.1016/s0002-9378(85)80071-5.
Behavioral states in the near-term human fetus have been described during pregnancy. The aim of this study was to observe whether these same states are present during labor. Nine patients with uncomplicated singleton pregnancies participated. Fetal heart rate and uterine contractions were recorded. Fetal eye, mouth, rotation, and retroflexion of the head were observed by real-time ultrasound. Fetal movements were recorded with coded event-markers. Behavioral states were identified by the movement pattern. A total of 13 ultrasound observations, varying from 25 to 66 minutes, were obtained. Optimal viewing was present at least 60% and on the average 80% of the time. State 1F (quiet sleep), state 2F (active sleep), and state 3F (quite awake), as well as a total of 10 state changes, were identified during labor in spite of increasing contractions and/or ruptured membranes. These observations demonstrate existence of alternating behavioral states in the healthy term fetus during labor.
孕期已对近期人类胎儿的行为状态进行了描述。本研究的目的是观察分娩期间是否存在这些相同的状态。9例单胎妊娠无并发症的患者参与了研究。记录了胎儿心率和子宫收缩情况。通过实时超声观察胎儿的眼睛、嘴巴、头部旋转和后屈情况。用编码事件标记记录胎儿运动。根据运动模式确定行为状态。共获得13次超声观察结果，时长从25分钟到66分钟不等。至少60%的时间且平均80%的时间有最佳观察视野。尽管宫缩增强和/或胎膜破裂，但在分娩过程中仍识别出了1F状态（安静睡眠）、2F状态（活跃睡眠）和3F状态（完全清醒），以及总共10次状态变化。这些观察结果表明，健康足月胎儿在分娩期间存在交替的行为状态。
