Rotmensch S, Liberati M, Luo J S, Hobbins J C
Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT 06510-8063.
Am J Obstet Gynecol. 1992 Nov;167(5):1314-6. doi: 10.1016/s0002-9378(11)91708-6.
Intravascular fetal transfusions are occasionally complicated by extravascular deposition of transfused blood or by fetal bradycardia on penetration of the needle into the umbilical cord. It is desirable therefore to continuously monitor the intravascular location of the needle and the fetal heart rate. This can be achieved by Doppler velocimetry of the umbilical vein and artery during the procedure. The technique is easily performed, does not require moving of the ultrasonography transducer, and appears to be time efficient.
胎儿血管内输血偶尔会出现输注的血液血管外沉积或穿刺针进入脐带时胎儿心动过缓的并发症。因此，持续监测穿刺针的血管内位置和胎儿心率是很有必要的。这可以通过在操作过程中对脐静脉和动脉进行多普勒测速来实现。该技术操作简便，无需移动超声换能器，而且似乎很省时。
