Catheter ablation of Ventricular Tachycardias is a well-established approach in clinical practice in patients with Implantable Cardioverter Defibrillator (ICD) implanted. Previous studies have shown a significant reduction in appropriate shocks (\~ 20%) and a significant reduction in hospitalizations for cardiovascular reasons (\~ 12%) in patients with ischemic heart disease treated with ablation. Recent works have also shown the effectiveness of the ablation procedure using as procedural target the reduction of late potentials. However, actually it is necessary to have an homogenize and accepted mapping scheme in Sinus Rhythm to ablate Ventricular Tachycardias related to scar substrate in patients with: * Previous MI * Previous myocarditis * Arrhythmogenic Right Ventricular Dysplasia (ARVD) * Idiopathic Dilated Cardiomyopathy (IDCM) Scope of the registry is to collect data during cardiac mapping in Sinus Rhythm in patients indicated for Ventricular Tachycardia ablation, that will be performed per clinical practice, by using the St. Jude Medical EnSiteTM PrecisionTM mapping system. The objective of the present registry is: to assess the acute and long-term efficacy of the strategy of substrate abolition (abolishment of complex and late potentials) guided by electroanatomic mapping with Precision software.
This is an Italian multicenter, observational, prospective and retrospective registry. Data will be collected during enrollment/baseline, procedure, pre-discharge and during the follow-up visits according to the standard practice of participating centers, with mandatory visits at 6 and 12 months. Data can also be collected retrospectively, prior informed consent of the patient. The planned enrollment duration is approximately 24 months.
Study Type
OBSERVATIONAL
Enrollment
312
Ventricular Tachycardia ablation, that will be performed per clinical practice, by using EnSite Precision mapping system with the Flexability catheter (St.Jude, now Abbott)
IRCCS San Raffaele
Milan, Italy
Late potential abolition and ventricular tachycardia noninducibility
Combined procedural endpoint of late potential (LP) abolition and VT noninducibility (endpoint expected in 50% of cases). LP abolition assessed as % of persistent LP area at remap after ablation, compared to the basal activation map.
Time frame: Intraprocedural
Ventricular tachycardia recurrence
Freedom from Ventricular Tachycardia episodes requiring ICD Intervention (shock or Anti-Tachycardia Pacing)
Time frame: 12 months
Complications
Periprocedural complications
Time frame: During hospitalization: starting during the procedure until discharge
Complications
Long term catheter ablation complications
Time frame: 12 months
Procedural parameters
Procedure duration measured in minutes
Time frame: Intraprocedural
Procedural parameters
Fluoroscopy exposure measured in Gycm2
Time frame: Intraprocedural
Assessment of cardiac mapping system EnSite Precision™ software (St.Jude, now Abbott)
Geometry precision, descriptive
Time frame: Intraprocedural
Assessment of cardiac mapping system EnSite Precision™ software (St.Jude, now Abbott)
Mapping accuracy, descriptive
Time frame: Intraprocedural
Assessment of cardiac mapping system EnSite Precision™ software (St.Jude, now Abbott)
System overall stability, descriptive
Time frame: Intraprocedural
Assessment of cardiac mapping system EnSite Precision™ software (St.Jude, now Abbott)
Non-recoverable shifts/drifts, descriptive
Time frame: Intraprocedural
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