Key result
Thermistor-guided radiofrequency ablation at atrial insertion sites required lower mean temperature and power than previously associated with ventricular lesions.
Why the study?
What is the relation between temperature and other electroconductive parameters during thermistor-guided radiofrequency ablation of atrial insertion sites in patients with accessory pathways?
Observational
What is the relation between temperature and other electroconductive parameters during thermistor-guided radiofrequency ablation of atrial insertion sites in patients with accessory pathways?
Thermistor-guided radiofrequency ablation at atrial insertion sites requires lower temperature and power than ventricular ablation, likely due to thinner atrial tissue.
May guide lower energy titration for atrial accessory pathways; hypothesis-generating versus ventricular data, needs prospective validation.
Radiofrequency ablation has gained acceptance in the treatment of patients with symptomatic Wolff-Parkinson-White syndrome. The purpose of this study was to characterize the relation between temperature and other electroconductive parameters in patients undergoing atrial insertion accessory pathway ablation utilizing a thermistor equipped catheter. The mean temperature and power at sites of atrial insertion ablation are lower than has been previously associated with creation of radiofrequency lesions in the ventricle. While high cavitary blood flow in the atrium may result in cooling, the thinner atrial tissue may require less energy to achieve adequate heating than ventricular myocardium.
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Tracy et al. (1995) conducted an observational in Symptomatic Wolff-Parkinson-White syndrome. Thermistor guided radiofrequency ablation was evaluated on Relation between temperature and other electroconductive parameters. Thermistor-guided radiofrequency ablation at atrial insertion sites required lower mean temperature and power than previously associated with ventricular lesions.
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