Key result
MCG mapping allows reproducible 3D localization of ventricular arrhythmias with ~10 mm accuracy.
Why the study?
Magnetocardiography has been used since 1985 to non-invasively localize arrhythmogenic substrates and screen patients at risk of sudden death with ventricular arrhythmias, but its clinical reliability and applications require further investigation.
Does magnetocardiographic mapping accurately localize the arrhythmogenic substrate in patients with severe ventricular arrhythmias?
Population
35 patients with Lown class 3 or higher ventricular arrhythmias related to primary cardiomyopathy and ischaemic heart disease
Comparison
Not applicable; observational study of MCG mapping in patients
Design
Observational case series
Authors
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Magnetocardiographic mapping shows promise for localizing ventricular arrhythmias; leaves open its clinical utility pending prospective validation.
Observational (n=35)
Does magnetocardiographic mapping accurately localize the arrhythmogenic substrate in patients with severe ventricular arrhythmias?
Magnetocardiography can accurately localize arrhythmogenic substrates in patients with severe ventricular arrhythmias, potentially guiding invasive electrophysiology and ablation.
Fenici et al. (1993) conducted an observational in Ventricular arrhythmias (n=35). Magnetocardiographic (MCG) mapping was evaluated on Localization of the site of origin of ventricular arrhythmia and Relative Smoothness Index. Magnetocardiographic mapping allowed reproducible three-dimensional localization of ventricular extrasystoles and sustained tachycardia with an accuracy of approximately 10 mm.
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