Objective To observe pulsative index (PI), resistant index (RI) of placental helicine arteries by colour Doppler, analyses relation between PI, RI and developing of pregnant hypertension.
目本研究采用彩色多普勒检
孕妇子宫胎盘床螺旋动脉搏动指
(PI),阻力指
(RI),
妊
征
、
展及
后。