Objective To evaluate the right ventricular function in patients with pulmonary hypertension（PH） by myocardial strain analysis

and to explore its clinical application value.Methods Sixty-eight PH patients（PH group） and 68 healthy controls（control group） were enrolled.Myocardial strain analysis technique was applied to measure the right ventricular longitudinal peak systolic strain of three sections:anterior free wall-posterior ventricular septum

middle free wall-middle ventricular septum

posterior free wall-anterior ventricular septum.The global strain（GS） and 17-segment strain values were obtained and then compared between groups.The correlation between the GS of right ventricular and the pulmonary arterial systolic pressure（PASP） was analyzed.Results There were significant differences of GS of right ventricle

basal segment strain of anterior free wall

basal segment strain of free wall

basal segment strain of posterior free wall

middle segment strain of anterior free wall

middle segment strain of free wall

basal segment strain of ventricular septum

basal segment strain of anterior ventricular septum

middle segment strain of ventricular septum

and middle segment strain of anterior ventricular septum between the two groups（all P<0.05）.Therefore

it was considered that the right ventricular GS and the above-mentioned segment strains in PH group were reduced from those in control group.The GS of right ventricle presented correlation with PASP（r=-0.784

P<0.01）.Conclusion It is feasible to perform multi-angular analysis on the right cardiac functions of PH by myocardial strain analysis technique.This technology is also an innovative approach of evaluating the overall and regional systolic functions of right ventricle.