Strain by speckle tracking echocardiography correlates with electroanatomic scar location and burden in ischaemic cardiomyopathy
نویسندگان
چکیده
Abstract Aims Ventricular tachycardia (VT) in ischaemic cardiomyopathy (ICM) originates from scar, identified as low-voltage areas with invasive high-density electroanatomic mapping (EAM). Abnormal myocardial deformation on speckle tracking strain echocardiography can non-invasively identify scar. We examined if regional and global longitudinal (GLS) localize quantify scar EAM. Methods results recruited 60 patients, 40 ICM patients undergoing VT ablation 20 for other arrhythmias controls. All underwent an echocardiogram prior to left ventricular (LV) Endocardial bipolar unipolar location percentage were correlated multilayer GLS. Controls had normal GLS voltages. There was a strong correlation between endocardial mid-myocardial all 17 LV segments (r = 0.76–0.87, P < 0.001) patients. Additionally, indices of contraction heterogeneity, dispersion (MD), delta duration (DCD) percentage. total 0.83; 0.82, 0.001 respectively), whereas epicardial 0.78, 0.001). −9.3% or worse 93% sensitivity 82% specificity predicting >46% surface area. Conclusions Multilayer analysis demonstrated good linear correlations by Validation studies are needed establish the utility non-invasive tool quantifying burden, thereby facilitating VT.
منابع مشابه
myocardial strain and strain rate imaging: comparison between doppler derived strain imaging and speckle tracking echocardiography
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ژورنال
عنوان ژورنال: European Journal of Echocardiography
سال: 2021
ISSN: ['2047-2412', '2047-2404']
DOI: https://doi.org/10.1093/ehjci/jeab021