Pathophysiological Effects on Coronary Arteries Following Radiofrequency Ablation: A Comprehensive Review.

Area of Science:

• Cardiology
• Electrophysiology
• Medical Physics

Background:

• Radiofrequency ablation (RFA) is a standard treatment for tachyarrhythmias.
• Coronary artery (CA) injury is a rare but serious complication of RFA.
• Understanding RFA's impact on CA perfusion is crucial due to anatomical proximity.

Purpose of the Study:

• To comprehensively review the mechanisms of coronary artery injury following RFA.
• To explore the biophysics of RFA and its relationship with CA perfusion pathophysiology.
• To identify factors influencing RFA lesion formation and CA injury.

Main Methods:

• Extensive literature search spanning three decades.
• Analysis of RFA biophysics and lesion pathology.
• Review of factors influencing lesion formation (e.g., convective cooling, shadow effect).

Main Results:

• Detailed elucidation of mechanisms leading to CA injury during RFA.
• Identification of key factors influencing RFA lesion characteristics and potential for CA injury.
• Exploration of convective cooling and the 'shadow effect' in RFA.

Conclusions:

• RFA-induced CA injury necessitates a thorough understanding of underlying mechanisms.
• Mitigation strategies for CA injury can be developed based on elucidated mechanisms.
• Further research is needed to optimize RFA safety, especially near CAs.