Evaluation of right ventricular diastolic function in patients with essential hypertension by quantitative tissue velocity imaging / 中华超声影像学杂志

ABSTRACT

Objective To analyze right ventrieular diastolic dysfunction in essential hypertension by quantitative tissue velocity imaging(QTVI). Methods Twenty normotensives and forty-five hypertensives underwent standard Doppler echocardiography and QTVI of right ventricular lateral tricuspid annulus. By QTVI,diastolic measurements were obtained. According to WHO standard, the patients with hypertension were classified into three groups, grade Ⅰ (group Ⅰ) 15 cases, grade Ⅱ(group Ⅱ) 15 cases, grade Ⅲ (group Ⅲ) 15 cases. Results Pulsed Doppler eehocardiography showed impaired Doppler diastolic indexes in hypertensives, without changes among the eases groups. In all hypertension groups, QTVI showed reduction of right ventricular Ea, increase of Aa and Ea/Aa<1 comparison with controls. IVRT of Ⅱ, Ⅲgroups was longer than normal. Conclusions Right ventricular diastolic function with essential hypertension decreased according to the degree of staging. QTVI has a greater predictive value than conventional imaging, and is useful for evaluating right ventricular function in patients with essential hypertension.