Abstract：Objective: To evaluate ventricular systolic function of pulmonary hypertension by tissue Doppler imaging techniques, and compare with the control group. To observe the changes of ventricular systolic function parameters in pulmonary hypertension patients. Methods: Sixty-two pulmonary hypertension patients and 30 normal subjects were observed. Color Doppler echocardiograph were performed and ventricular free wall thickness and end-diastolic area were observed. Right ventricular ejection fraction(RVEF) were measured with double plane Simpson formula. Peak systolic velocity of tricuspid valve ring(anterior leaflet, posterio leaflet, septal leaflet) was measured with tissue Doppler echocardiography. Peak systolic myocardial strain, strain rate of free wall of right ventricular and basal segment of interventricular septum, intermediate segment, apical segment were analysed off-line. Results: The right ventricular systolic function of pulmonary hypertension patients was decreased. The peak systolic myocardial velocity, strain, strain rate were lower than those of control group in different degree. Peak systolic myocardial strain of free wall of right ventricular basal segment, intermediate segment were lower than those of control group. Conclusion: The right ventricular peak systolic myocardial strain and strain rate, peak systolic velocity of tricuspid valve ring of pulmonary hypertension patients could be used as markers for evaluating ventricular systolic function. The ventricular systolic function could be evaluated more accurate when combined with right ventricular geometry indices and RVEF.
2010, Vol. 21 
