NGHIÊN CỨU CHỈ SỐ SỨC CĂNG DỌC THẤT TRÁI BẰNG SIÊU ÂM ĐÁNH DẤU MÔ CƠ TIM Ở BỆNH NHÂN SUY TIM MẠN TÍNH

Abstract

Objectives: To evaluate left ventricular global longitudinal strain by 2D speckle tracking echocardiography in patients with chronic heart failure (HF). Subjects and methods: A prospective, descriptive and cross-sectional study on 70 patients with HF treated at the Department of Cardiology, Military Hospital 103 and Friendship Hospital from January, 2022 to July, 2022. The patients were clinically and paraclinically evaluated for heart failure, patients were clasified according to NYHA.  GLS was calculated using 2-dimensional speckle tracking and left ventricular ejection fraction was measured using Simpson’s method. Resuls: The mean age was 78.61 ± 8.24 years old, men were 70%. GLS in study group decreased more than normal (-11.92 ± 4.00 to – 19.65 ± 1.78; - 20.40 ± 2.2; p < 0.05). GLS of patients with heart failure in group NYHA II, NYHA III and NYHA IV, Were -13.85 ± 3.24; -10.39 ± 3.72 and -8.67 ± 4.42 respectively, the difference was statistically significant in the NYHA II group compared with NYHA III and NYHA IV. Patients with hypertension, coronary artery disease had a significant decrease in GLS compared with the others (p < 0.05). Conclusion: GLS of patients with HF was reduced.  GLS decreased gradually according to the severity of heart failure according to NYHA. In the group of patients with heart failure with hypertension,  coronary artery disease, the GLS value decreased significantly compared with the group of patients without hypertension, coronary artery disease (p < 0.05).