Abstract
Background
The most common complication of alcohol septal ablation (ASA) is transient periprocedural high-grade AV block (HGAVB). To date, no long-term follow-up of cardiovascular implantable electronic device (CIED) utilization after ASA has been reported. We hypothesized that CIED dependence on long-term follow-up can be predicted by ECG or procedural characteristics.
Methods
We analyzed all patients with HCM who underwent ASA from December 1998 to December 2019 and received their first CIED within 30 days after ASA for HGAVB. All follow-up interrogations were reviewed. CIED dependence was defined as ventricular pacing of ≥ 5%.
Results
A total of 138 patients with HCM underwent ASA. Of these, 35 had a prior device and were excluded. Of the remaining 103 patients, 25 patients received a CIED for HGAVB within 30 days after ASA. Average follow-up duration was 10.1 years. On long-term follow-up, 16 patients (64%) were found to be CIED-dependent. Baseline characteristics, including pre- and post-ASA ECG, were not significantly different between dependent and non-dependent patients. The only predictor for CIED dependence was > 1 ml of alcohol injected (OR 6.0, p = 0.031).
Conclusions
CIED implantation after ASA is common. Almost two thirds of patients who received a CIED for post-procedural HGAVB were CIED-dependent on long-term follow-up. CIED dependence can be predicted by the amount of injected alcohol > 1 ml.
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Data Availability
The data that support the findings of this study are not openly available due to reasons of sensitivity and are available from the corresponding author upon reasonable request. Data are located in controlled access data storage at Massachusetts General Hospital.
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Acknowledgements
We thank Eyal Ben-Assa, Rasha Al-Bawardy, and Dhaval Kolte for their contributions to complete the database.
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The study protocol was approved by the Mass General Brigham Institutional Review Board.
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Weeranun Bode, Michael Bode, Megan Zhao, Michael A. Fifer, Igor Palacios, Rahul Sakhuja — none
Theofanie Mela — Abbott, Biotronik, Medtronic speaker honoraria and Biotronik, Medtronic, Spectranetics consultation fees
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Bode, W.D., Bode, M.F., Zhao, M. et al. Predictors of cardiovascular implantable electronic device dependence at long-term follow-up after alcohol septal ablation in hypertrophic cardiomyopathy patients. J Interv Card Electrophysiol 66, 2071–2080 (2023). https://doi.org/10.1007/s10840-023-01532-w
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DOI: https://doi.org/10.1007/s10840-023-01532-w