Arrhythmias & electrophysiology
False Tendons in the Left Ventricle: Implications for Successful Ablation of Left Posterior Fascicular Tachycardias
Authors' conclusion
FTs provide an electroanatomical substrate for LPF-VT and a "culprit FT" may be identified as the critical structure bridging the macro-re-entrant loop.
Study context
- Population
- Patients with left posterior fascicular VT (left posterior fascicular ventricular tachycardia (LPF-VT)) undergoing electrophysiology study and radiofrequency ablation
- Participants
- 26 patients
- Outcome
- Endocavitary substrate of the re-entrant loop of LPF-VT
Methodological detailsconsecutive patients
- Consecutive patients
Main finding
As reported in the abstract
- Prevalence of false tendons (FTs) at left posterior septal region on intracardiac echocardiography
- 100%
- Types of FTs classified by location
- 3
- P1 potential recorded from a FT (patients)
- 22
- Without P1: earliest P2 recorded from a FT (patients)
- 3
- Without P1: earliest P2 from muscular connection between 2 posteromedial papillary muscles (patients)
- 1
- Successful ablation targeting FTs with P1 or earliest P2 (patients)
- 26
Further findings
Recurrence of LPF-VT · 19 ± 8.5 months of follow-up
- Patients with recurrence of LPF-VT
- 0
Original publication
False Tendons in the Left Ventricle: Implications for Successful Ablation of Left Posterior Fascicular Tachycardias. JACC Clin Electrophysiol. Published 19 July 2023. doi:10.
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