Acute Effects of Radiofrequency Ablation of Atrial Arrhythmias on Implanted Permanent Pacing Systems

摘要: We studied the safety of performing RF catheter ablation in patients with implanted permanent pacemakers by monitoring function pacing systems before, during, and immediately after exposure to energy. Patients may require for treatment a variety tachyarrhythmias. High frequency electromagnetic fields, such as energy, affect systems, causing temporary or loss output, undersensing, oversensing, asynchronous pacing, reversion "reset" (Recommended Replacement Time Power On Reset) parameters. Thirty-five (23 DDDR, 6 VVIR, 5 DDD, 1 VVI, 31 bipolar 4 unipolar) underwent ablation. Prior ablation, each system measurements sensing thresholds, telemetry intracardiac electrograms measurement battery voltage lead impedance(s). During pacemaker was monitored real-time telemetry, electrograms, surface ECG. Immediately reevaluated. Telemetry during revealed normal 14 (40%) 35 patients. Refractory period extension noise mode were seen 16 (46%) Rare under- and/or reset parameters, "lock up" inhibition output few After there no significant changes atrial ventricular thresholds impedances. conclude that most are not adversely affected energy A behaviors be thorough understanding pulse generator's potential response(s) interference is important before undertaking pacemakers. Careful reevaluation patient's following procedure mandatory.