MỐI LIÊN QUAN CỦA TƯƠNG HỢP NHĨ TRÁI - THẤT TRÁI VỚI CHỨC NĂNG NHĨ TRÁI, CHỨC NĂNG TÂM TRƯƠNG THẤT TRÁI VÀ ĐẶC ĐIỂM TỔN THƯƠNG ĐỘNG MẠCH VÀNH Ở BỆNH NHÂN HỘI CHỨNG ĐỘNG MẠCH VÀNH MẠN

Abstract

Objectives: To investigate the relationship between left atrioventricular coupling and left atrial function, left ventricular diastolic function and characteristics of coronary artery lesions in patients with chronic coronary syndrome (CCS). Methods: A descriptive cross-sectional study on 64 patients with CCS treated at the Cardiovascular Department and the Cardiovascular Interventional Department, Military Hospital 103 from October 2024 to April 2025. Patients underwent echocardiography to assess left atrial function, left ventricular diastolic function, left atrioventricular coupling, and then underwent percutaneous coronary angiography (PCA) or coronary computed tomography (CCTA) as indicated. Results: The left atrioventricular coupling index (LACI) was negatively correlated with left atrial total emptying fraction (r = - 0.496, p < 0.001), passive emptying fraction (r = - 0.392, p < 0.001) and active emptying fraction (r = - 0.267, p < 0.05); positively correlated with maximum left atrial volume (r = 0.334, p < 0.01), mean E/e' ratio (r = 0.258, p < 0.05). The LACI in groups with numbers of narrowed coronary branches or levels of coronary artery stenoses was different insignificantly (p > 0.05). Conclusion: Left atrioventricular coupling is negatively correlated with left atrial function and positively correlated with left ventricular diastolic dysfunction in patients with CCS. There was no difference in LACI between groups with different numbers of narrowed branches or levels of coronary artery stenoses.