ĐÁNH GIÁ CHỨC NĂNG TÂM TRƯƠNG THẤT TRÁI BẰNG SIÊU ÂM DOPPLER TIM Ở BỆNH NHÂN RUNG NHĨ MẠN TÍNH TẠI BỆNH VIỆN TRUNG ƯƠNG THÁI NGUYÊN

Abstract

This study was conducted to evaluate the value of echocardiographic parameters in assessing diastolic function in patients with chronic atrial fibrillation. The methodology: A cross-sectional descriptive study was performed on 54 patients with chronic atrial fibrillation at Thai Nguyen National Hospital from October 2024 to September 2025, and data analysis was performed using SPSS 25.0 software. Results: Results showed that 64.8% of patients had diastolic dysfunction. Compared with patients without diastolic dysfunction, those with dysfunction had significantly higher septal E/e′ ratio (14.71 ± 2.68 vs 9.63 ± 1.01), shorter isovolumetric relaxation time (62.80 ± 11.79 ms vs 112.68 ± 27.99 ms), higher E/Vp ratio (1.83 ± 0.49 vs 1.16 ± 0.29), and shorter pulmonary venous deceleration time (200.66 ± 22.12 ms vs 241.89 ± 19.23 ms). The sensitivity of these parameters in detecting diastolic dysfunction was 91.4%, 88.6%, 77.1%, and 74.3%, with areas under the curve ranging from 0.88 to 0.97. Conclusion: Diastolic dysfunction is common among patients with chronic atrial fibrillation, and echocardiographic parameters such as septal E/e′ ratio, IVRT, E/Vp, and pulmonary venous deceleration time demonstrate high sensitivity in its detection. The septal E/e′ ratio serves as an independent marker for diagnosis and risk stratification of heart failure with preserved ejection fraction in chronic atrial fibrillation.