Khảo sát sức căng nhĩ trái bằng siêu âm đánh dấu mô cơ tim ở người bệnh tăng huyết áp

To investigate left atrial strain by speckle tracking echocardiography in hypertensive patients, the relationship between left atrial strain and left ventricular diastolic dysfunction. Subjects and methods: The study was conducted on 142 hypertensive patients, from November 2022 to March 2023 at Military Hospital 103. Echocardiography was performed to evaluate left atrial and left ventricular function. Results: Mean age 70.3  12.3 years, 70.4% were men, of which 54,2% hypertensive patients had left ventricular diastolic dysfunction. The left atrial strain assessment parameters (LASr-ED, LAScd-ED, LASct-ED, LASr-AC, LAScd-AC, LASct-AC) in hypertensive patients were 24.2 ± 14.4%, -11.8 ± 7.7%; -12.5 ± 10.7%; 20.8 ± 10.7%; -10.5 ± 6.9%, -10.3 ± 8.3%, respectively. Left atrial strain reservoir (LASr) in patients with hypertension > 10 years (16.9 ± 10.4%) was significantly lower than in patients with hypertension < 5 years (28.1 ± 15.5%) and patients with hypertension 5 - 10 years (28.6 ± 14.3%) (p < 0,05). LASr was more reduced in hypertensive patients with left ventricular diastolic dysfunction compared to the group with normal left ventricular diastolic function ((21.6 ± 13.4% vs 27.3 ± 14.8%, p = 0.02). LASr was inversely correlated with E/E' septum (r = -0.21, p < 0.001), E/E' lateral (r = -0.31, p < 0.001), LAVmax (r = - 0.45, p = 0.001), LAVmin (r= -0.64, p = 0.013), positively correlated with LAEF (r = 0.71, p = 0.005). Conclusions: Left atrial strain decreased significantly in patients with hypertension > 10 years compared to the patients with hypertension < 5 years. Left atrial strain decreased in hypertensive patients with left ventricular diastolic dysfunction compared to the group with normal left ventricular diastolic function.