Key result
Cardiovascular imaging guides VT ablation by precisely identifying structural and electrophysiological targets.
Why the study?
Cardiovascular imaging has become a fundamental aid in planning and guiding catheter ablation procedures by integrating structural and electrophysiological information to characterize arrhythmogenic substrates and identify ablation targets.
Cardiac imaging techniques such as ICE, CMR, MDCT, and nuclear imaging play a fundamental role in planning and guiding catheter ablation for ventricular tachycardia.
Answers are grounded in this paper and cite their sources.
May facilitate VT ablation targeting; leaves open prospective outcome trials before routine adoption.
Ventricular tachycardia is a major health issue in patients with structural heart disease (SHD). Implantable cardioverter defibrillator (ICD) therapy has significantly reduced the risk of sudden cardiac death (SCD) in such patients, but on the other hand, it has led to frequent ICD shocks as an emerging problem, being associated with poor quality of life, frequent hospitalizations and increased mortality. Myocardial scar plays a central role in the genesis and maintenance of re-entrant arrhythmias, as the coexistence of surviving myocardial fibres within fibrotic tissue leads to the formation of slow conduction pathways and to a dispersion of activation and refractoriness that constitutes the milieu for ventricular tachycardia circuits. Catheter ablation has repeatedly proven to be well tolerated and highly effective in treating VT and in the last two decades has benefited from continuous efforts to determine ventricular tachycardia mechanisms by integration with a wide range of invasive and noninvasive imaging techniques such as intracardiac echocardiography, cardiac magnetic resonance, multidetector computed tomography and nuclear imaging. Cardiovascular imaging has become a fundamental aid in planning and guiding catheter ablation procedures by integrating structural and electrophysiological information, enabling the ventricular tachycardia arrhythmogenic substrate to be characterized and effective ablation targets to be identified with increasing precision, and allowing the development of new ablation strategies with improved outcomes. In this review, we provide an overview of the role of cardiac imaging in patients undergoing catheter ablation of ventricular tachycardia.
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Muser et al. (2020) conducted a review in Ventricular tachycardia. Cardiac imaging was evaluated. Cardiovascular imaging provides fundamental structural and electrophysiological information to plan and guide catheter ablation of ventricular tachycardia, enabling precise identification of targets.
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