Initial impedance predicts temperature during radiofrequency catheter ablation
نویسندگان
چکیده
منابع مشابه
Impedance monitoring during radiofrequency catheter ablation in humans.
Radiofrequency catheter ablation of accessory pathways and the atrioventricular junction often requires multiple applications of energy. The inability to determine the effects of any given application on the underlying tissue may contribute to this problem. In the present study, impedance was monitored in 20 patients undergoing radiofrequency catheter ablation, and the relationship between an i...
متن کاملRelation between impedance and endocardial contact during radiofrequency catheter ablation.
Lesion size during radiofrequency catheter ablation in patients with paroxysmal supraventricular tachycardia (PSVT) is thought to be related to multiple factors, including contact pressure at the catheter-endocardial interface. Therefore a predictor of contact pressure at a potential target site for ablation might be useful. In this study 25 patients underwent duplicate 2 W applications of radi...
متن کاملTemperature monitoring during radiofrequency catheter ablation of accessory pathways.
BACKGROUND Animal studies have suggested that the temperature of the electrode-tissue interface during radiofrequency catheter ablation accurately predicts lesion size. The purpose of the current study was to evaluate the utility of continuous temperature monitoring during radiofrequency catheter ablation in patients with Wolff-Parkinson-White syndrome. METHODS AND RESULTS Twenty patients wit...
متن کاملTemperature response in radiofrequency catheter ablation.
T he ablative effect of radiofrequency (RF) energy is based on resistive heating of tissue adjacent to the delivery electrode. Generally, the amount of heat generated relates to the amount of power delivered. Thus, under controlled experimental conditions, delivered power can be used as a parameter to control the amount of myocardial damage.1,2 However, in the clinical situation, a large propor...
متن کاملImpedance During Radiofrequency Ablation of Ventricular Myocardium
The purpose of this study was to correlate changes in electrical impedance with the electrode-tissue interface temperature and to characterize the associated events occurring at the catheter tip electrode. In a canine model, lesions were created in vitro (n =49) and in vivo (n =31) and radiofrequency power settings were varied. Electrode-tissue interface temperature, delivered current, and volt...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1998
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(98)81748-8