Study of cardiac torsion in fetuses with gestational diabetes mellitus by velocity vector imaging / 中华超声影像学杂志

ABSTRACT

Objective To investigate the clinical value of velocity vector imaging (VVI) in the assessment of cardiac torsion in fetuses with gestational diabetes mellitus(GDM).Methods Digital dynamic four-chamber views of 98 fetuses with gestational diabetes mellitus and 135 normal fetuses were collected and analyzed using VVI.Left ventricular(LV) peak apical rotation of endocardium and epicardium at basal and apical level were measured,LV peak torsion was calculated.Results 140 of 233 cases were analyzed successfully.Direction of LV peak apical and basal rotation of endocardium and epicardium in fetus could be clockwise or counter clockwise,however apical and basal level was opposite.LV peak apical and basal rotation of endocardium and epicardium in fetus were stable throughout gestation ( P ＞ 0.05).LV peak rotation of endocardium was higher than that of epicardium in both apical and basal level.The peak rotation　in apical level of endocardium and epicardium was higher than that in basal level( P ＜0.05).LV peak　torsion of endocardium was significantly higher than that of epicardium( P ＜0.05).Compared with normal　group,LV peak rotation of endocardium and LV peak torsion in fetus with GDM were higher( P ＜0.05).　Conclusions VVI can measure the LV rotation and torsion parameters,and evaluate the cardiac function of　GDM fetus.