Arrhythmias & electrophysiologyCohort study
Geometric Features of Ventricular Tachycardia Corridors in Patients With Ischemic Cardiomyopathy
- Retrospective cohort study
Authors' conclusion
Most VT corridors in patients with ischemic cardiomyopathy, derived from late gadolinium enhanced magnetic resonance images and validated by mapping, were hyperboloid, but funnel and cylinder shapes were also seen. The central hyperbola exhibits a larger opening angle at the exit ostium than the entrance.
Study context
- Population
- Patients with ischemic cardiomyopathy undergoing CMR before first ventricular tachycardia (VT) ablation, November 2018–May 2024
- Participants
- 46 patients
- Outcome
- Prevalence of VT corridor geometry (hyperboloid, funnel or cylinder) and corridor ostium angle, width, length, thickness, volume and accessibility
Main finding
As reported in the abstract
Central corridors at 125 VT exit sites (45 patients): hyperbola geometry
93.6%
Central corridors at VT exit sites: funnel geometry
4.8%
Central corridors at VT exit sites: cylinder geometry
1.6%
Mean corridor ostium angle at VT exit vs opposite ostium (mean±SD), P< 0.001
102.8°±34.1° versus 83.2°±29.5°
Observational data: associations, not effects.
Original publication
Summarised from the published abstract; every number is checked against it