Sepulveda W, Mangiamarchi M
Centre for Fetal Care, Royal Postgraduate Medical School, Queen Charlotte's and Chelsea Hospital, London, UK.
Ultrasound Obstet Gynecol. 1995 Jan;5(1):57-9. doi: 10.1046/j.1469-0705.1995.05010057.x.
Incidental fetal yawning movements can rarely be observed during real-time ultrasonographic examination. In this report we document repetitive fetal yawning movements in a 27-week fetus over a 7-min period. Each episode lasted for 4-6 s, and the intervals between them varied from 21 to 195 s. This case demonstrated that fetal yawning, a complex involuntary behavioral reflex, is present in its full extent during the second half of pregnancy.
在实时超声检查期间，偶然能观察到胎儿打哈欠动作。在本报告中，我们记录了一名27周胎儿在7分钟内反复出现的打哈欠动作。每次发作持续4 - 6秒，发作间隔从21秒到195秒不等。该病例表明，胎儿打哈欠这一复杂的非自主行为反射在妊娠后半期已完全出现。
