Arrhythmias & electrophysiology
Transcoronary mapping with an over-the-wire multielectrode catheter in scar-related ventricular tachycardia patients
Authors' conclusion
The transcoronary mapping with an over-the-wire multielectrode catheter can safely record abnormal bipolar electrograms within coronary arteries.
Study context
- Population
- Scar-related ventricular tachycardia (VT) patients with non-ischaemic cardiomyopathy undergoing mapping from a coronary artery with a novel over-the-wire multielectrode catheter6 with simultaneous coronary venous mapping
- Participants
- 10 patients
- Outcome
- Safety and utility of transcoronary mapping
Methodological detailsconsecutive patients
- Consecutive patients
Main finding
As reported in the abstract
- Substrate map points during baseline rhythm, median (IQR 2136-3490 points)
- 2438
- Points in coronary arteries (IQR 59-508 points)
- 329
- Abnormal bipolar electrograms recorded within coronary arteries close to the endocardial substrate (patients)
- 7
- Isthmus components recorded within coronary vessels during VT, none discernible on endocardial mapping (patients)
- 3
- Ablation terminated VT from an endocardial site opposite the earliest site in the coronary arteries (patients)
- 5
Observational data: associations, not effects.
Original publication
Transcoronary mapping with an over-the-wire multielectrode catheter in scar-related ventricular tachycardia patients. Europace. Published 14 December 2023. doi:10.
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