Arrhythmias & electrophysiology
Evolution of Deceleration Zones During Ventricular Tachycardia Ablation and Relation With Cardiac Magnetic Resonance
Authors' conclusion
DZs are highly correlated with CMR-CCs. In addition, remapping can lead to the identification of hidden substrate initially not identified by electroanatomic mapping but detected by CMR.
Study context
- Population
- Patients with scar-related ventricular tachycardia (VT) undergoing ablation after cardiac magnetic resonance (CMR) (Hospital Clinic, October 2018-December 2020)95 deceleration zones (DZs) analysed
- Participants
- 42 patients
- Outcome
- Evolution of DZs during ablation and their correlation with CMR-CCs
Methodological detailsconsecutive patients, single-centre, Patients prospectively followed for VT recurrence for 1 year
- Consecutive patients
- Single-centre
- Patients prospectively followed for VT recurrence for 1 year
Main finding
As reported in the abstract
- DZs correlated with CMR conducting channels (CMR-CCs)
- 93.68%
- Correlated DZs in middle segment of channel
- 44.8%
- Correlated DZs at entrance/exit of channel
- 55.2%
- DZs disappeared after first ablation set
- 72.2%
- DZs not ablated at end of procedure
- 14.13%
- DZs in remaps correlated with CMR-CCs already detected
- 32.5%
- DZs in remaps associated with unmasked CMR-CCs
- 17.5%
Observational data: associations, not effects.
Further findings
Remapping performed
- Patients remapped
- 91.7%
- 1 remap
- 33.3%
- 2 remaps
- 55.6%
- 3 remaps
- 2.8%
VT recurrence · 1 year
- One-year VT recurrence
- 22.9%
Original publication
Evolution of Deceleration Zones During Ventricular Tachycardia Ablation and Relation With Cardiac Magnetic Resonance. JACC Clin Electrophysiol. Published 22 February 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →