Discrepancies Between Catheter Tip and Tissue Temperature in Cooled-Tip Ablation
نویسندگان
چکیده
منابع مشابه
Discrepancies between catheter tip and tissue temperature in cooled-tip ablation: relevance to guiding left atrial ablation.
BACKGROUND It is not known whether catheter tip temperatures with a cooled-tip ablation can be reliably extrapolated to estimate actual tissue temperatures. The relationship between catheter tip temperatures, tissue temperatures, power, and microbubble formation is not known. METHODS AND RESULTS Nine dogs underwent 111 radiofrequency energy deliveries at the pulmonary vein ostia with a cooled...
متن کاملFeatures : Cooled Tip Catheter Ablation
Just over a decade ago, the advent of tip temperature monitoring during radiofrequency (RF) energy delivery marked the beginning of a second generation of ablation catheter technology and furthered the success of catheter ablation as a therapeutic tool. RF generators were designed with a closed-loop feedback system to automatically adjust power output to avoid temperatures that would cause coag...
متن کاملConvective cooling effect on cooled-tip catheter compared to large-tip catheter radiofrequency ablation.
BACKGROUND Both actively cooled-tip and large-tip catheters are currently available clinically to create large endomyocardial lesions during application of radiofrequency (RF) energy. The purpose of this study was to compare the effect of convective cooling at physiologic flow rates on RF lesion size using both actively cooled and large-tip catheters. METHODS Porcine hearts were sectioned int...
متن کاملCatheter ablation of ventricular epicardial tissue: a comparison of standard and cooled-tip radiofrequency energy.
BACKGROUND Transthoracic epicardial catheter ablation is an emerging catheter ablation strategy being used clinically at increasing frequency. However, the efficacy of standard RF ablation on the epicardial surface of the heart is hindered by (1) the lack of convective cooling of the ablation electrode and (2) the varying presence of epicardial adipose tissue interposed between the ablation ele...
متن کاملImproved Flutter Ablation Outcomes Using a 10mm-tip Ablation Catheter
INTRODUCTION Radiofrequency(RF) ablation has become the first line of therapy for atrial flutter(AFL). Advances in catheter and mapping technologies have led to better understanding and different approaches for treating this arrhythmia. We describe the results of different approaches to ablate this arrhythmia. MATERIALS AND METHODS A cohort of 198 patients with isthmus dependent AFL. The tech...
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ژورنال
عنوان ژورنال: Circulation
سال: 2005
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circulationaha.104.492439