ĐÁNH DẤU MÔ CƠ TIM TRONG DỰ ĐOÁN HẸP ĐỘNG MẠCH VÀNH CÓ Ý NGHĨA Ở BỆNH NHÂN HỘI CHỨNG VÀNH MẠN

Abstract

Methods: Using a cross-sectional study design, we enrolled 57 patients with chronic coronary syndrome. All patients underwent transthoracic echocardiography, coronary computed tomography angiography, and invasive coronary angiography. Results: The mean age of the study population was 63.3 ± 8.8 years; 49.1% were female. The mean left ventricular global longitudinal strain values obtained by speckle-tracking echocardiography in the apical four-, two-, and three-chamber views, and the overall average were -20.1 ± 2.9%, -18.1 ± 2.7%, -18.8 ± 2.9%, and -19.0 ± 2.7%, respectively. Significant stenosis in at least one coronary artery was detected in 21 patients (36.8%) by invasive coronary angiography. The sensitivity, specificity, accuracy, and area under the curve (AUC) of global longitudinal strain for predicting significant coronary artery stenosis at the cut-off of -18.0% were 77.8%, 71.4%, 75.5%, and 0.81 (95% CI: 0.68-0.93), respectively. Conclusion: Left ventricular global longitudinal strain measured by speckle-tracking echocardiography demonstrates good diagnostic performance in predicting significant coronary artery stenosis.