Objective:

To present a rare case of a 50-year-old male with bilateral coronary artery fistulas, progressive aortic regurgitation, persistent atrial fibrillation, acute heart failure, and pulmonary hypertension.

Key Findings:

• The patient maintained sinus rhythm and reported overall well-being during a one-year follow-up, with echocardiography showing a reduction in left atrial size.
• Cardiac MRI indicated significant recovery from adverse cardiac remodeling, with improved ejection fraction.

Interpretation:

This case highlights the importance of comprehensive cardiac evaluations in patients with atrial fibrillation and heart failure, emphasizing the need for individualized treatment strategies that consider the unique complexities of each case.

Limitations:

• The rarity of CAFs limits the generalizability of findings to broader populations.
• There is a lack of high-quality evidence for management strategies of CAFs, which may affect treatment decisions.

Conclusion:

The case underscores the complex interrelationship between CAFs, aortic regurgitation, atrial fibrillation, and heart failure, necessitating tailored treatment approaches that integrate various therapeutic modalities.