Sepulveda W, Shennan A H, Peek M J
Centre for Fetal Care, Royal Postgraduate Medical School, Institute of Obstetrics and Gynaecology, Queen Charlotte's and Chelsea Hospital, London, United Kingdom.
Am J Obstet Gynecol. 1996 May;174(5):1645-7. doi: 10.1016/s0002-9378(96)70622-1.
Serial Doppler ultrasonography in a severely growth-restricted fetus revealed progressive reduction in pulsatility index of the middle cerebral artery, consistent with brain-sparing effect. At 29 weeks, 1 week before fetal death, the pulsatility index in the middle cerebral artery returned to normal values and became reversed the day before fetal death. This report suggests that reverse flow in the middle cerebral artery is one of the terminal hemodynamic events preceding fetal death.
对一名严重生长受限胎儿进行的系列多普勒超声检查显示，大脑中动脉搏动指数逐渐降低，这与脑保护效应一致。在孕29周时，即胎儿死亡前1周，大脑中动脉搏动指数恢复到正常水平，并在胎儿死亡前一天出现反转。本报告提示，大脑中动脉反向血流是胎儿死亡前的终末血流动力学事件之一。
