Lesion Dimensions During Temperature-Controlled Radiofrequency Catheter Ablation of Left Ventricular Porcine Myocardium
نویسندگان
چکیده
منابع مشابه
Lesion dimensions during temperature-controlled radiofrequency catheter ablation of left ventricular porcine myocardium: impact of ablation site, electrode size, and convective cooling.
BACKGROUND It is important to increase lesion size to improve the success rate for radiofrequency ablation of ischemic ventricular tachycardia. This study of radiofrequency ablation, with adjustment of power to approach a preset target temperature, ie, temperature-controlled ablation, explores the effect of catheter-tip length, ablation site, and convective cooling on lesion dimensions. METHO...
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...
متن کاملFactors Influencing Lesion Formation During Radiofrequency Catheter Ablation
In radiofrequency (RF) ablation, the heating of cardiac tissue is mainly resistive. RF current heats cardiac tissue and in turn the catheter electrode is being heated. Consequently, the catheter tip temperature is always lower--or ideally equal--than the superficial tissue temperature. The lesion size is influenced by many parameters such as delivered RF power, electrode length, electrode orien...
متن کاملTemperature-controlled radiofrequency catheter ablation of manifest accessory pathways.
OBJECTIVES The primary objectives of this study were to assess the feasibility of temperature-controlled radiofrequency catheter ablation of left and right sided manifest accessory pathways in patients with Wolff-Parkinson-White syndrome and to gain more insights into biophysical aspects of temperature-controlled catheter ablation in humans. BACKGROUND The electrode-tissue interface temperatu...
متن کاملTemperature Controlled Radiofrequency Ablation
Since its introduction in 1987, radiofrequency (RF) ablation has developed to become the treatment of choice for symptoms caused by atrio ventricular (AV) reentrant tachycardia, isthmus related atrial flutter, AV-nodal reentrant tachycardia and to some extent also for certain types of ventricular tachycardias. The introduction of new cardiac activation mapping systems has further contributed to...
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ژورنال
عنوان ژورنال: Circulation
سال: 1999
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.99.2.319