FPROGNOSTIC VALUE OF M AGNETIC RESONANCE IMAGING IN PREDICTING OF M YOCARDIAL VIABILITY IN PATIENTS W ITH ISCHEMIC CARDIOMYOPATHY
Journal Title: Праці Наукового товариства ім. Шевченка - Year 2017, Vol 49, Issue
Abstract
The aim o f the study was to assess myocardial viability according to hyperenhancement in left ventricular segments and to assess predictive value of late hyperenhancement extent for prediction o f left ventricular myocardial function recovery after revascularization in patients with ischemic cardiomyopathy. Material and methods. 40 patients with heart failure after myocardial infarction were enrolled, cardiac MRI with late gadolinium enhancement was performed. Segmental extent o f hyperenhancement in all patients was calculated. In 12 patients revascularization was performed. We assessed segmental contractility before and 3-6 month after revascularization and compared the degree offunctional improvement o f the segment with different extent of hyperenhancement. Results. Segments with low extent of hyperenhancement (0-25%) improved systolic function in 70%, segments with extent o f hyperenhancement up to 50% - in 50%, segments with hyperenhancement 75% and more - in 2,7%. Based on echocardiographic segmental functional recovery 3-6 months after revascularisation, we calculated the prognostic value o f the late hyperenhancement extent that could be used to distinguish between viable and nonviable segments The sensitivity o f the segmental late hyperenhancement extent with cutoff 50% in prediction of segmental functional recovery was 70,8%, the specificity - 84,9%. Conclusions. Cardiac MRI with late gadolinium enhancement is the sensitive and specific method of prediction of functional recovery after revascularization. Likelihood o f systolic function improvement in segments with low extent o f late hyperenhancement (0-50%) is high. Segments with high extent o f late hyperenhancement (>75%) could be considered as non-viable.
Authors and Affiliations
Yuriy IVANIV, Nelya ORYSHCHYN
Keywords
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