Diagnostic Value of Speckle Tracking Echocardiography (Ste) in the Determination of Myocardial Ischemia: A Pilot Study Publisher



Mahjoob MP¹ ; Piranfar MA¹ ; Maghami E¹ ; Mazarei A¹ ; Khaheshi I¹ ; Naderian M^{2, 3}
Source: Polish Annals of Medicine Published:2019

Abstract

Introduction: As 2D-speckle tracking echocardiography (STE) has supposed to be a novel and non-invasive imaging modality for the early recognition of ischemic heart disease before angiography, further study of this diagnostic method is of great importance. Ai m: This study was intended to weigh the diagnostic value of STE in the revealing of myocardial ischemia before and after efficacious revascularization. Ma t e r i a l a nd me t ho ds: 25 patients with an indication for revascularization – angioplasty or coronary artery bypass grafting (CABG) – diagnosed by an experienced cardiologist and based on accepted criteria, underwent two-dimensional (2D) STE; and global systolic longitudinal strain for each of the sections in the apical 2-chamber and 4-chamber views was evaluated. Re s ul t s a nd di s c us s i o n: The mean of longitudinal strain before revascularization procedures was 14.94% ± 2.32% and after procedures was 19.08% ± 2.83%. (P < 0.001). After procedure, 6 patients (24%) showed longitudinal strain under 18% in spite of revascularization; mean longitudinal strain was significantly lower in these 6 patients compared to other 19 patients who revealed longitudinal strain over 18% after revascularization (15.45% ± 2.35% vs. 20.22% ± 1.84 %, P < 0.001). We found that the sensitivity and specificity of longitudinal strain differences at the cut-off point 4.1% for predicting ischemia with 0.281 area under the ROC curve were 100%, 53%, 40%, 100%, and 64%, respectively. Co nc l us i o ns: Our results showed that predicting and diagnosing myocardial ischemia by STE is a precise method with high sensitivity and specificity values. © 2020, Warmia and Mazury Medical Chamber. All rights reserved.