Arrhythmias & electrophysiology
Non-invasive detection of slow conduction with cardiac magnetic resonance imaging for ventricular tachycardia ablation
Authors' conclusion
Non-invasive detection of targets for VT ablation is possible with CMR. Deceleration zones found during electroanatomical mapping accurately correlate with CMR channels, especially those with increased length, BZ mass, and protectedness.
Study context
- Population
- Consecutive patients with structural heart disease and ventricular tachycardia (VT) undergoing ablation after CMR, single centre, October 2018 to July 2021 (mean age 64.8 ± 11.6 years; 95.5% male; 70.5% ischaemic heart disease; mean EF 32.3 ± 7.8%)109 CMR channels analysed
- Participants
- 44 patients
- Exposure
- CMR channels associated with deceleration zones (DZs) vs channels not associated with DZs
- Outcome
- Capability of CMR to identify DZs (correlation of CMR channels with DZs on isochronal late activation mapping) and predictors of arrhythmogenicity in CMR channels
Methodological detailssingle-centre, consecutive patients
- Single-centre
- Consecutive patients
Main finding
As reported in the abstract
CMR channels associated with a DZ
CMR channels associated with a DZ
76.1%
Observational data: associations, not effects.
Further findings
Channel length (univariate analysis)
OR 1.03 · P = 0.010
Protectedness (univariate analysis)
OR 1.08 · P = 0.021
BZ mass (univariate analysis)
OR 2.46 · P = 0.011
CMR channel characteristics (all channels)
- Channels per patient
- 2.48 ± 1.15
- Length
- 57.91 ± 63.07 mm
- Conducting channel mass
- 2.06 ± 2.67 g
- Protectedness
- 21.44 ± 25.39 mm
Original publication
Non-invasive detection of slow conduction with cardiac magnetic resonance imaging for ventricular tachycardia ablation. Europace. Published 23 January 2024. doi:10.
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