Objective To evaluate the left ventricular systolic function(LVSF)in normal pregnant women and patients with pregnancy-induced hypertension syndrome(PIHS)in their middle and late pregnancy(MLP)using velocity vector imaging(VVI). Methods Thirty normal MLP(20-30-week gestation)women were selected and served as normal pregnancy group,26 MLP with PIHS served as PIHS group,and 30 healthy non-pregnant served as control group.Employing VVI,the global longitudinal peak systolic velocity(Vpeak),the global longitudin...