Key result
Revascularization cuts CV mortality ~41% vs. OMT in IHD patients with myocardial viability.
Why the study?
Recent clinical trials have questioned the prognostic value of myocardial viability imaging in patients with ischemic cardiomyopathy being evaluated for revascularization.
Advanced multimodality imaging for myocardial viability should be individualized and integrated with broader clinical and anatomical factors rather than used as a strict binary threshold for denying or pursuing revascularization.
Supports revascularization in viable myocardium; challenges binary viability imaging, favoring individualized integration with clinical and anatomical factors.
Myocardial viability imaging plays a pivotal role in evaluating patients with ischemic cardiomyopathy who may benefit from revascularization. Despite recent trials questioning its prognostic value, imaging continues to shape therapeutic decisions. This comprehensive review explores the underlying pathophysiological basis, diagnostic modalities, and clinical evidence on myocardial viability. We compare contemporary imaging tools and outline a practical framework for individualized patient assessment. Advanced modalities such as cardiac magnetic resonance, positron emission tomography, and dobutamine stress echocardiography provide robust insights into myocardial viability. Findings from key clinical trials, including STICH and REVIVED-BCIS2, reveal the nuanced role of viability in guiding revascularization strategies. We propose that myocardial viability testing remains a valuable adjunct in selected clinical scenarios, emphasizing integration with ischemia assessment, anatomical context, and symptom burden.
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Alhumaid et al. (2026) studied ischemic heart disease. Revascularization vs. Optimal medical therapy was evaluated on Cardiovascular mortality (HR 0.59, 95% CI 0.30-0.91, p=0.019). Revascularization reduced cardiovascular mortality by 41% compared to optimal medical therapy in patients with ischemic heart disease and myocardial viability.
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