It was reported that the patient experienced atrioventicular (av) first degree heart block and arrhythmia.During a pulse field ablation (pfa) procedure, a farawave catheter was selected for use.The physician wanted to use the pfa catheter in the superior vena cava (svc), despite being informed that it was off label, physician still wanted to proceed with treating the svc.While treating the svc, the patient's sinoatrial (sa) node was knocked out and eventually, the patient went into junctional rhythm before going back to sinus by the time they left the room.The patient was then admitted over night with rapid ventricular response (rvr) and treated with amiodarone anti-arrhythmic medication and settled into av first degree heart block.The patient was fine, and no further action was being planned.The catheter will not be returned as it was disposed.
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