Kirkinen P, Herva R, Rãsãnen J, Airaksinen J, Ikäheimo M
Department of Obstetrics and Gynaecology, University of Oulu, Finland.
J Perinat Med. 1989;17(1):63-5.
In a case with one acardiac twin, color Doppler examination revealed retrograde umbilical circulation to this fetus. This pulsatile flow in the umbilical vessel of the acardiac fetus was supported by the cardiac function of the co-existing healthy twin.
在一例无心双胎的病例中，彩色多普勒检查显示有逆向脐循环至该胎儿。无心胎儿脐血管内的这种搏动性血流是由同时存在的健康双胎的心脏功能维持的。
