Background: Coronary air embolism is a rare but severe complication of coronary interventions.
Case presentation: We present a case of a massive air embolism in the right coronary artery during percutaneous coronary intervention, resulting in ventricular fibrillation. The patient was successfully resuscitated with electric defibrillation, leading to full recovery and TIMI 3 coronary flow. The final fractional flow reserve showed no residual coronary microvascular dysfunction.
Conclusion: Our finding suggests that inducing strong myocardial contractions with a cardioverter defibrillator may effectively disperse large air emboli and restore coronary circulation.
Keywords: Coronary artery air embolism; Coronary slow flow; Fractional flow reserve; Percutaneous coronary intervention; Right coronary artery.
© 2025. The Author(s).