Key result
Intraoperative mapping and cryoablation of a free-wall focus resulted in surgical cure of catecholamine-sensitive right ventricular outflow tract tachycardia.
Why the study?
Does intraoperative mapping and cryoablation cure catecholamine-sensitive right ventricular outflow tract tachycardia in patients refractory to pharmacological therapy?
Case Report (n=1)
Does intraoperative mapping and cryoablation cure catecholamine-sensitive right ventricular outflow tract tachycardia in patients refractory to pharmacological therapy?
Permanent ablation of catecholamine-sensitive right ventricular outflow tract tachycardia with a regional procedure is feasible and can result in surgical cure.
Successful free-wall cryoablation cured refractory RVOT VT in one case; leaves open generalizability to catheter ablation.
WILBER, D.J., et al .: Calecholamine Sensitive Right Ventricular Outflow Tract Tachycardia: Intraoperative Mapping and Ablation of a Free‐Wall Focus A patient with catecholamine‐sensitive right ventricular ouiflow tract tachycardia refractory to pharmacological therapy underwent intraoperative mapping and cryoablation. Epicardial and endocardial mapping demonstrated earliest ventricular activation in the free‐wall of the outflow tract, and cryoablation of the area resulted in surgical cure. No histologic abnormalities at the site of tachycardia origin were detected. Catecholamine sensitivity does not appear to result from a diffuse myocardial process, and permanent ablation of the tachycardia in this group of patients with a regional procedure is feasible,
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Wilber et al. (1989) conducted a case report in Catecholamine-sensitive right ventricular outflow tract tachycardia (n=1). Intraoperative mapping and cryoablation was evaluated on Surgical cure / permanent ablation of the tachycardia. Intraoperative mapping and cryoablation of a free-wall focus resulted in surgical cure of catecholamine-sensitive right ventricular outflow tract tachycardia.
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