Evaluation of coronary lesions with two-dimensional strain echocardiography / 中国医学影像技术

ABSTRACT

Objective To evaluate the coronary lesions with two-dimensional strain echocardiography. Methods Sixty-seven patients with suspected coronary heart diseases who underwent coronary angiography were divided into two groups. Forty-two of them with coronary stenosis ≥70% were considered as patient group, and the other 25 with coronary stenosis ＜50% were regarded as control group. Two-dimensional strain was performed in all patients within 24 h before coronary angiography. Longitudinal systolic strain rate (SRs), early (SRe) and late (SRa) diastolic strain rate, systolic strain (Ss), and time to SRe (T-SRe) were measured and compared. Results Ss, SRs, SRe and SRe/SRa decreased significantly in regions controlled by coronary artery with ≥70% stenosis in patient group compared with those controlled by coronary artery with ＜50% stenosis in control group. SRs and SRe were the independent predictive factors of coronary stenosis ≥70%, and the sensitivity and specificity of SRe ＜0.91 to identify coronary stenosis ≥70% was 72.46% and 89.65%, respectively. Conclusion Two-dimensional strain echocardiography may accurately evaluate the coronary lesions by detecting regional myocardial diastolic function.