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Aortic valve artifact during ventricular tachycardia originating from the outflow tract

Year: 2026

Type: article

Abstract: A 61-year-old male with dilated cardiomyopathy underwent electrophysiological study for incessant ventricular tachycardia (VT). Although early and late diastolic potentials were recorded in the aortic sinus during VT, electrograms obtained during the sinus beat revealed two components following the QRS, suggesting that aortic valve artifacts were the cause of the prepotentials during VT. This case underscores the importance of distinguishing valve artifacts from true arrhythmogenic potentials in left ventricular outflow tract mapping. • Aortic valve artifacts may appear as diastolic potentials during ventricular tachycardia • Misinterpretation of valve artifacts can lead to ineffective ablation • Awareness of valve artifacts improves ablation site localization • Electrograms during sinus rhythm help distinguish artifacts from true signals

Source: Indian Pacing and Electrophysiology Journal

DOI: 10.1016/j.ipej.2026.02.004

Authors: Yui Kitami, Tsukasa Kamakura, Masao Matsuda, Kengo Kusano

Institution: National Cerebral and Cardiovascular Center

Language: English

Topic: Cardiac Arrhythmias and Treatments

Subfield: Cardiology and Cardiovascular Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $550