The value of speckle tracking imaging for evaluation of PIH on function of the right ventricle of the neonate

GAO Xiaoli; LYU Huiyang; LI lingling; LIU Qing; FAN Lijun

Abstract：Objective Through the application of speckle tracking imaging technique for the examination of pregnant women with pregnancy-induced hypertension ( PIH) on the impact of right ventricular myocardial segments of the neonates and, in turn, to assess the PIH on impact of right ventricular function in neonata.Methods We collected echocardiography on four chamber of heart from 60 newborns, whose mothers were suffered from PIH, including 30 cases from gestational hypertension ( GH group) 30 cases from preeclampsia ( PE group) , and 60 cases of normal neonates ( control group) and measured the peak velocity ( Vs) at rapid ejection phase of each segment of right ventricle, peak strain rate ( SRs) , peak strain ( S) , peak velocity ( Vd) at rapid fill-ing phase, and peak strain rate ( SRd) .Results Of those 120 neonates, 112 were successfully acquired the images.The Vs and Vd in each free wall and septal wall of the right ventricle in each group were gradually reduced from the basal segments to the api-cal segments, with statistically significant difference between the basal segment and apical segments (P <0.05).The Vs and Vd in each myocardial segment of the right ventricle in GH and PE group were significantly decreased compared with those in control group (P <0.05).The Vd in each myocardial segment of the right ventricle in GH and PE group were significantly reduced com-pared with those in control group (P <0.05).The S, SRs and SRd in each myocardial segment of the right ventricle in GH and PE group were significantly decreased compared with those in control group (P <0.05).The Vs and Vd in each myocardial seg-ment of free wall of right ventricle in PE group was significantly decreased compared with that in GH group ( P<0.05) .Conclu-sion Speckle tracking imaging can detect changes in the function of right ventricular myocardial segments in neonates.PIH af-fects the right ventricular function in neonate, partially reduces myocardial function.With the aggravation of PIH, the damage of neonatal myocardium is accentated correspondingly.