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Utility of Intracoronary Acetylcholine Provocation Testing in Inducing Atrial Fibrillation with Preexcitation Followed by Ventricular Fibrillation in a Patient with Wolff-Parkinson-White Syndrome: A Case Report.
Internal Medicine 2024 Februrary 20
A 20-year-old man was resuscitated after ventricular fibrillation (VF). Electrocardiography revealed Wolff-Parkinson-White (WPW) syndrome. Intracoronary acetylcholine provocation testing was performed to induce VF secondary to the coronary vasospasm. The administration of acetylcholine to the coronary artery induced atrial fibrillation (AF) with pre-excitation, followed by VF without coronary vasospasm. Electrophysiological studies revealed an accessory pathway managed by catheter ablation. Subsequent intracoronary acetylcholine provocation testing (ACH test) induced the occurrence of AF without preexcitation. To our knowledge, this case report is the first to demonstrate the utility of the ACH test in confirming WPW syndrome as a cause of VF.
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