This clinical investigation is a device-based open, prospective, multicenter two-arm randomized trial, comparing patients who are treated in the slow VT zone versus patients who are not treated in that zone. The device intended to be used is the OVATIOTM CRT model 6750 but future generation of Sorin Group/ ELA Medical devices may be used provided they are CE marked. Ethics committees and health authorities will be informed prior to any use of a newer device if applicable. All patients will have a 3-zone detection configuration programmed. The slow VT zone will be defined by programming the detection parameters as follows: * Slow VT detection rate: 100 bpm (or if the resting rate is higher than 80 bpm, we recommend to adjust this parameter to: resting rate + 30 bpm) * VT detection rate: 150 bpm PARAD+ will be the first choice for SVT/ST and VT discrimination in the VT zones. The Fast VT and VF limits are left to investigator's judgment. Therapy on VT, fast VT and VF are also left to the investigator's judgment. Patients will be randomized at implant to have the slow VT zone programmed as a monitoring zone (monitoring arm) or to have therapies programmed within the slow VT zone (therapy arm). The randomization table will be generated by Sorin Group/ELA Medical.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
481
Slow VT zone programmed as a "Monitoring" zone (Monitoring arm)
Slow VT zone programmed with ATP therapies (therapy arm).
Algemeen Ziekenhuis
Antwepen, Belgium
Grey-Nuns Hospital
Edmonton, Canada
Royal Alexandra Hospital
Edmonton, Canada
Laval UH, Ste Foy
Québec, Canada
CH Albi
Albi, France
CH Angers
Angers, France
Incidence of slow ventricular tachycardias (Slow VTs) in CRT-ICD pts;
Time frame: 24 months
ATP therapy efficacy on slow VTs conversion.
Time frame: 24 months
Efficacy of ATP therapies on Slow VTs according to therapy setting (delivery in LV only, in RV only, or in LV+RV)
Time frame: 24 months
Tvar risk stratification
Time frame: 24 months
"unscheduled visits" or "hospital re-admissions" due to slow VTs;
Time frame: 24 months
Incidence of adverse events (AEs) in the studied population
Time frame: 24 months
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Hôpital privé d'Antony
Antony, France
Hôpital Haut Lévèque
Bordeaux, France
Hôpital de la Cavalle Blanche
Brest, France
Clinique de Parly II
Le Chesnay, France
...and 39 more locations