Khảo sát mối tương quan giữa sự đàn hồi động mạch chủ với khối cơ thất trái ở đối tượng tiền tăng huyết áp và tăng huyết áp nguyên phát bằng siêu âm tim

This study aimed at estimating the indexes of aortic elasticity, left ventricular mass in the prehypertensive, primary hypertensive subjects and the correlation between the indexes of aortic elasticity, blood pressure, and left ventricular mass index. The study had been conducted on 40 primary hypertensives, 40 prehypertensives compared with normotensive control group having the same age and gender. They were taken echocardiography to measure systolic aortic diameter, diastolic aortic diameter, and left ventricular mass. They were then assessed the indexes such as aortic strain, aortic stiffness, aortic distensibility and left ventricular mass index. The results revealed that left ventricular mass index, aortic stiffness were significantly higher and aortic strain and aortic distensibility were significantly lower in the hypertensives, prehypertensives than those of the normotensive control group (p 0,05 and 0,01). There were negative correlation between systolic blood pressure, left ventricular mass index and both aortic strain and aortic distensibility. In contrast, there was positive correlation between aortic stiffness and systolic blood pressure, left ventricular mass index (p 0,05). Thus, aortic elasticity in the prehypertensives and primary hypertensives decreases, which has repercussions on left ventricular mass, so it is a predictor of cardiovascular risk factors.