AI Article Synopsis
- Before the ablation for ventricular tachycardia, the patient's cardiac device was set to backup pacing mode with tachycardia treatments turned off.
- During the ablation using radiofrequency energy, the patient unexpectedly experienced ventricular fibrillation, which required immediate cardioversion.
- The episode highlighted that devices can switch to noise reversion mode, leading to asynchronous pacing and potentially dangerous arrhythmias in situations with electromagnetic interference, like catheter ablation.
Article Abstract
Prior to ventricular tachycardia ablation, this patient's cardiac implantable electronic device (CIED) was temporarily programmed to backup pacing mode with tachycardia therapies disabled. During radiofrequency energy delivery, the patient developed ventricular fibrillation requiring emergent cardioversion. Electrogram interrogation showed that the CIED switched to noise reversion mode during ablation. The consequent asynchronous pacing resulted in a paced QRS landing on an intrinsic T wave, inducing ventricular fibrillation. This serves as an important reminder that asynchronous pacing consequent to CIED oversensing could occur in any procedure that could cause electromagnetic interference such as radiofrequency cathteter ablation.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8021979 | PMC |
| http://dx.doi.org/10.1002/joa3.12517 | DOI Listing |
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