Ischemia with Nonobstructive Coronary Artery Disease and Atrial Cardiomyopathy-Two Sides of the Same Story?

Area of Science:

• Cardiology
• Vascular Biology
• Electrophysiology

Background:

• Ischemia with nonobstructive coronary artery disease (INOCA) and atrial cardiomyopathy (ACM) are significant causes of cardiovascular morbidity.
• Coronary microvascular dysfunction (CMD) is a key mechanism underlying INOCA, involving alterations in coronary microcirculation.
• ACM involves atrial remodeling, leading to conditions like atrial fibrillation (AF) and heart failure (HF).

Purpose of the Study:

• To investigate the potential links between CMD and ACM, two frequently coexisting pathologies.
• To explore the underlying mechanisms driving both CMD and ACM, including shared risk factors and endothelial dysfunction.
• To discuss therapeutic strategies targeting endothelial dysfunction for improved patient prognosis.

Main Methods:

• Systematic review of existing literature on CMD, INOCA, ACM, and endothelial dysfunction.
• Analysis of shared risk factors and pathophysiological pathways.
• Evaluation of current and potential therapeutic interventions.

Main Results:

• CMD and ACM share common risk factors and frequently coexist, suggesting interconnectedness.
• Endothelial dysfunction may be a central mechanism linking these conditions.
• The review highlights the need for further research into the causal relationship and therapeutic targets.

Conclusions:

• CMD and ACM represent a complex interplay of cardiovascular pathologies.
• Targeting endothelial dysfunction holds promise for managing patients with both INOCA and ACM.
• Further research is crucial to elucidate causal links and optimize treatment strategies.