RESEARCH PAPER
Diagnostic value of speckle tracking echocardiography (STE) in the determination of myocardial ischemia: a pilot study
 
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1
Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2
Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
3
Cardiovascular Research Department, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
CORRESPONDING AUTHOR
Mohammad Asadpour Piranfar
Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran, Modarres Hospital, Kaj Sq., Sa’adat Abad, Tehran, Iran. Tel.: +982122083106.
Online publication date: 2019-11-25
Submission date: 2017-06-04
Acceptance date: 2017-12-11
 
Pol. Ann. Med. 2019;26(2):126–129
KEYWORDS
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.

Aim:
This study was intended to weigh the diagnostic value of STE in the revealing of myocardial ischemia before and after efficacious revascularization.

Material and methods:
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.

Results and discussion:
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.

Conclusions:
Our results showed that predicting and diagnosing myocardial ischemia by STE is a precise method with high sensitivity and specificity values.

CONFLICT OF INTEREST
The authors indicated that they have no conflicts of interests regarding the content of this article.
FUNDING
None.
 
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