Coronary microvascular dysfunction is a central mechanism in cardiovascular disease, requiring targeted diagnostic strategies like invasive testing and advanced noninvasive imaging for management.
Coronary microvascular dysfunction (CMD) is increasingly recognized as a central mechanism underlying myocardial ischemia, heart failure with preserved ejection fraction, and adverse cardiovascular outcomes in patients with and without obstructive coronary artery disease. The coronary microcirculation plays a critical role in regulating myocardial perfusion through tightly coordinated myogenic, metabolic, and endothelial pathways. Disruption of these mechanisms results in impaired vasodilatory capacity, abnormal coronary flow reserve, and microvascular ischemia. This review summarizes the anatomy and physiology of coronary microcirculation and examines the pathophysiologic mechanisms driving CMD, including endothelial dysfunction, structural remodeling, inflammation, and neurohormonal dysregulation. Contemporary diagnostic strategies are reviewed, with emphasis on invasive coronary function testing and advanced noninvasive imaging modalities such as positron emission tomography and cardiac magnetic resonance imaging. The clinical implications of CMD across diverse disease states, including ischemia with nonobstructive coronary arteries, heart failure, and cardiomyopathies, are discussed. Finally, current therapeutic approaches, prognostic considerations, and emerging research directions aimed at improving diagnosis and targeted treatment of CMD are highlighted.
Top article in February 2026 issue, with 400 downloads and 150 shares on ResearchGate. Discussed in Reddit cardiology threads and cited in AHA updates.
Ahmad et al. (Mon,) conducted a review in Coronary microvascular dysfunction. Coronary microvascular dysfunction is a central mechanism in cardiovascular disease, requiring targeted diagnostic strategies like invasive testing and advanced noninvasive imaging for management.