Assessment of Left Ventricular Systolic Function after Acute Myocardial Infarction by Tissue Doppler Imaging

2020 European Journal of Medicine  
The coronary artery disease is the leading cause of mortality and morbidity globally and acute myocardial infarction is the commonest mode of presentation. The tissue Doppler imaging shows myocardial motion (measured as tissue velocity) at specific locations in the heart. Tissue velocity indicates the rate at which a particular point in the myocardium moves toward or away from the transducer. Integration of velocity over time yields displacement or the absolute distance moved by that point. The
more » ... by that point. The most common method for determining ventricular volumes is the Simpson rule, or the "rule of disks." This technique requires recording an apical, four-and/or two-chamber view from which the endocardial border is outlined in end-diastole and end-systole. A cross-sectional study carried out in The AL-Kindey Teaching Hospital (November 2017 -July 2018), 60 patients, 39 (65 %) males and 21(35 %) females with acute myocardial infarction of first time admitted to CCU. All patient were admitted to Coronary Care Unit and Left Ventricular systolic function had been evaluated by measuring Systolic myocardial velocity (sm) by Pulse Wave tissue Doppler imaging and Ejection Fraction by Simpson's method. Results revealed that 25 patients (41.7 %) of them presented with anterior Myocardial infarction, inferior Myocardial infarction in 17 patients (28.3 %), lateral Myocardial infarction in 11 patients (18.3 %), and septal Myocardial infarction in 7 patients (11.7 %). (60.6 %) of anterior Myocardial infarction, (24.2 %) of inferior Myocardial infarction, (9.1 %) of lateral Myocardial infarction, and (6.1) of septal Myocardial infarction were associated with Ejection Fraction <55. There were significant differences between means of 4 mitral annular sites Sm by ejection fraction for patients with anterior, lateral Myocardial infarction, and septal Myocardial infarction.
doi:10.13187/ejm.2020.2.47 fatcat:nil473h3mbgavmo45catb2yzne