Nghiên cứu biến đổi hình thái, chức năng tâm trương thất phải và mối liên hệ giữa chức năng tâm trương của hai thất ở bệnh nhân tăng huyết áp bằng siêu âm Doppler quy ước

Purposes: Assessing changes of morphology and right diastolic ventricular function and its correlation with diastolic function of biventricles for patients with arterial hypertension by conventional pulsed Doppler echocardiography. Materials and methods: 60 hypertensive patients, mean age 51.87 + or - 5.41, were diagnosed by the systemic hypertension classification of WHO/ISH 2004. Hypertensive patients were divided into 2 groups: group with (n=30) and without ventricular hypertrophy (n=30) hospitalized at the Hue Medicine and Phannacy University Hospital from February 2008 to June 2009 and control group (n=30), mean age 50.1 + or - 5.34. No other heart diseases were diagnosed. Clinical parameters included: age, gender, BSA, diastolic and systolic blood pressure. Doppler echocardiographic parameters included: Morphology and routine left and ventricular systolic function according to the ASE. Left and right ventricular diastolic function and Tei index were evaluated by conventional Pulsed Doppler Echocardiography. Doppler echocardiographic parametters were measured 3-5 times at a speed sweep 100mm/s. Diastolic functional changes were based on alteration of two pulsed Doppler parameters. Results: In hypertensive patients, there were significant differences of the majority of right and left morphologic parameters in comparison with control subjects. Two hypertensive groups with and without hypertension had clearly right ventricular diastolic function changes compared with controls. Right ventricular diastolic function well correlated to left ventricular diastolic function, based on the following parameters to correspond with biventricles: peak early (E) and peak late (A) diastolic flow velocity, E/A ratio, deceleration time of E wave (DTE), isovolumic relaxation time (IRT), isovolumic contraction time (ICT) and Tei index. Conclusion: To hypertensive patients, morphology and right ventricular diastolic function early changed as soon as non left vetricular hypertrophy and evident than when no left ventricular hypertrophy. There are good correlation with diastolic function of biventricles.