The study aimed was to measure left ventricular (LV) strain using speckle tracking echocardiography (STE) for assessment of LV function. Eighty-two subjects (mean age 57±9 years) with suspected chest pain underwent two-dimensional (2D)-echocardiography before coronary angiography. Conventional echocardiographic parameters were used for the assessment of LV function. Longitudinal strain and its strain rate (SR) and circumferential strain, and its SR with 2D-STE were calculated for the assessment of myocardial function. According to the angiography results, patients were divided into two groups: CAD patients (n=60) and healthy group (n=22). There was a significant decrease in longitudinal and circumferential strain and strain rate in patients with CAD compared to healthy individuals (longitudinal strain in patients -16.2±2.4 vs -19.5±2.1 for a healthy group) (P-value<0.05). Discriminate analysis of longitudinal and circumferential strain with values of 78% and 83% indicated the highest sensitivity respectively. ST as a non-invasive method for measurement of strain and strain rate parameters is proposed in the early diagnosis of LV dysfunction in patients with CAD.
Ahmadi Z, Mokhtari Dizaji M, Sadeghpour A, Khesali H, Firouzi A. Evaluation of strain and strain rate parameters using two-dimensional speckle-tracking echocardiography in patients with coronary artery disease (Research Article). مجله علمی پژوهشی انجمن مهندسی صوتیات ایران 2022; 9 (2) :9-18 URL: http://joasi.ir/article-1-222-en.html