Circulation: Arrhythmia and Electrophysiology Paul J. Wang, MD High-Resolution Infrared Thermography of Esophageal Temperature During Radiofrequency Ablation of Atrial Fibrillation Matthew G. Daly, MBChB … Ian G. Crozier, MD Matthew G. Daly and associates examines whether a high-resolution 9F infrared thermography catheter can continuously image esophageal temperatures during atrial fibrillation catheter ablation. The infrared temperature catheter was inserted nasally (n=8) or orally (n=8) into the esophagus adjacent to the left atrium. Endoscopy was performed within 24 hours to document esophageal injury. Thermal imaging showed that 10 out of 16 patients experienced ≥1 events where peak esophageal temperature was >40°C. Three patients experienced temperatures >50°C, and 1 experienced >60°C. Analysis of temperature data for each subject’s maximum thermal event revealed high gradients (2.3±1.4°C/mm) and rates of change (1.5±1.3°C/s) with an average length of esophageal involvement of 11.0±5.4 mm. Endoscopy identified 3 distinct thermal lesions, all in patients with temperatures >50°C; all resolved within 2 weeks. The authors concluded that infrared thermography provided high-resolution mapping of esophageal temperatures during catheter ablation. Esophageal thermal injury occurred with temperatures >50°C and was associated with large spatiotemporal gradients. Incidence and Predictors of Perioperative Complications With Transvenous Lead Extractions: Real-World Experience With National Cardiovascular Data
Circulation: Arrhythmia & Electrophysiology – Wolters Kluwer Health
Published: Feb 1, 2018
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