Features : Cooled Tip Catheter Ablation
نویسنده
چکیده
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 coagulation formation on the ablation catheter tip.
منابع مشابه
Convective 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 کاملProspective randomised comparison of irrigated-tip and large-tip catheter ablation of cavotricuspid isthmus-dependent atrial flutter.
BACKGROUND Radiofrequency (RF) ablation of cavotricuspid isthmus (CTI) dependent flutter can be performed using different types of ablation catheters. It has been proposed that irrigated and large-tip catheters are capable of creating larger lesions, resulting in greater efficacy. This prospective, randomised clinical study compared the efficacy of irrigated and large-tip catheters of different...
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 کاملCatheter Ablation of Ventricular Epicardial Tissue
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 کاملDiscrepancies 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...
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