ĐẶC ĐIỂM CỦA SIÊU ÂM ĐÁNH DẤU MÔ CƠ TIM TRÊN BỆNH NHÂN NHỒI MÁU CƠ TIM KHÔNG ST CHÊNH LÊN

Abstract

Background: In the setting of non-ST-elevation myocardial infarction, speckle tracking echocardiography can provide information on early myocardial function. Objective: To investigate the characteristics of speckle tracking echocardiography in patients with non-ST-segment elevation myocardial infarction at Kien Giang General Hospital in 2021-2022. Materials and methods: A cross-sectional descriptive study on 83 patients diagnosed with non-ST-segment elevation myocardial infarction according to the guidelines of the Ministry of Health 2019. Results: The most frequent ejection fraction (EF) was 58.0%. There were 41.0% patients with reduced ejection fraction (EF < 55%). 90.4% of patients had reduced myocardial tension. The average global longitudinal strain result was -13.61. The wall motion score index was 1.25. There was a statistically significant difference in the number of damaged coronary arteries with all 4 features of echocardiographic markers of myocardial tissue (p<0.05). Risk stratification according to the GRACE scale had only a statistically significant difference with the number of decompensated myocardial regions (p=0.042) and with the mean GLS (p=0.012). The characteristics of the degree of coronary artery stenosis only had a statistically significant difference with the mean GLS (p=0.005). Conclusion: The results of speckle tracking echocardiography showed that 41.0% of patients had reduced ejection fraction; in most patients with a total deformity index, systolic longitudinal axis is near the upper limit; most of them had reduced myocardial tension and increased cardiac wall motility index.