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Updated: May 17, 2026

Robotic Ablation of Atrial Fibrillation
Published on: May 29, 2015
Late-Onset Suspected Coronary Vasospasm Following Focal Monopolar Pulsed-Field Ablation for Atrial Fibrillation
Yui Araki1, Kanae Hasegawa1, Ryohei Nomura1
1Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
Introduction:
Coronary vasospasm is a recognized complication of pulsed-field ablation (PFA), but delayed events are rarely described.
Methods And Results:
A 64-year-old man underwent atrial fibrillation ablation using a focal monopolar PFA catheter. He developed transient chest discomfort 18 h after ablation, followed by sustained chest tightness with ST-segment depression 42 h post-procedure. Symptoms and electrocardiographic changes resolved promptly with sublingual nitroglycerin, suggesting coronary vasospasm.
Conclusion:
Coronary vasospasm after focal monopolar PFA may occur beyond the immediate post-procedural period, which may have implications for monitoring and discharge planning.
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