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RESEARCH PAPER
Diagnostic value of speckle tracking echocardiography (STE) in the determination of myocardial ischemia: a pilot study
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
Submission date: 2017-06-04
Acceptance date: 2017-12-11
Online publication date: 2019-11-25
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.
Cardiovascular Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran, Modarres Hospital, Kaj Sq., Sa’adat Abad, Tehran, Iran. Tel.: +982122083106.
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.
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.
FUNDING
None.
CONFLICT OF INTEREST
The authors indicated that they have no conflicts of interests regarding the content of this article.
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