Coronary microvascular dysfunction beyond the spectrum of chronic coronary syndromes

Area of Science:

• Cardiology
• Vascular Biology
• Internal Medicine

Background:

• Coronary microvascular dysfunction (CMD) is increasingly recognized beyond chronic coronary syndromes (CCS).
• CMD plays a role in various cardiac conditions including heart failure, cardiomyopathies, Takotsubo syndrome, and aortic stenosis.
• Non-invasive techniques now allow for accurate CMD identification.

Purpose of the Study:

• To review the prevalence, mechanistic, and prognostic implications of CMD outside the typical CCS spectrum.
• To highlight CMD as a potential indicator of adverse cardiac remodeling and a determinant of therapeutic outcomes.
• To consolidate current evidence on CMD in heart failure, cardiomyopathies, Takotsubo syndrome, and aortic stenosis.

Main Methods:

• Literature review of recent studies on coronary microvascular dysfunction.
• Analysis of pathophysiological and therapeutic aspects of CMD in diverse cardiac conditions.
• Synthesis of evidence regarding prognostic significance and treatment response in non-CCS patients with CMD.

Main Results:

• CMD is a significant factor in heart failure, cardiomyopathies, Takotsubo syndrome, and aortic stenosis.
• CMD can cause myocardial ischemia even without obstructive coronary artery disease, leading to poorer prognosis.
• Characterizing CMD patterns beyond CCS provides insights into disease progression and remodeling.

Conclusions:

• CMD is a critical factor in various cardiac conditions beyond CCS.
• Identifying CMD patterns is essential for understanding disease progression and predicting outcomes.
• Further research into CMD in non-CCS settings can guide therapeutic strategies and improve patient management.