Voltage analysis after multi-electrode ablation with duty-cycled bipolar and unipolar radiofrequency energy: a case report
نویسندگان
چکیده
Pulmonary vein ablation with a single-tip catheter remains long and complex. We describe a typical case of a novel efficient technique with a decapolar ring catheter utilizing alternating unipolar/bipolar radiofrequency energy. Voltage analysis and electrical mapping demonstrate the potential for antrum ablation and pulmonary vein isolation.
منابع مشابه
Results of short-term and long-term pulmonary vein isolation for paroxysmal atrial fibrillation using duty-cycled bipolar and unipolar radiofrequency energy.
BACKGROUND Electrical disconnection of the pulmonary veins (PV) plays an important role in the ablation of paroxysmal atrial fibrillation (AF). Antral ablation using a conventional steerable ablation catheter often is technically challenging and time consuming. METHODS Eighty-eight patients (mean age 58 +/- 11 years) with symptomatic paroxysmal AF underwent ablation with a circular mapping/ab...
متن کاملThe use of the multi-electrode duty-cycled radiofrequency ablation catheter PVAC for the ablation of a left atrial tachycardia.
The multi-electrode ablation catheter PVAC is used to simplify pulmonary vein isolation in patients undergoing ablation of atrial fibrillation. The use of the PVAC in cases of atrial tachycardia has not been reported before. In the present report, we present the use of the PVAC for the ablation of a left atrial tachycardia following pulmonary vein isolation. This case may suggest that the PVAC ...
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A 54-year-old man was referred for ablation of symptomatic drug-refractory long-lasting persistent atrial fibrillation. His past medical history was negative for cardiac disease but included a diagnosis of esophageal achalasia. The patient underwent an ablation procedure, guided by barium esophagram, including isolation of the pulmonary veins, ablation of complex fractionated left atrial electr...
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BACKGROUND The risk of pulmonary vein narrowing (PVN) after pulmonary vein isolation, using a novel multi-electrode ablation catheter, is unknown. METHODS AND RESULTS Left atrial volume and PV diameters were compared by computed tomography (CT) before and 3 months after pulmonary vein isolation using duty-cycled phased radio frequency energy (2:1 or 4:1 bipolar/unipolar ratio) in 50 patients....
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BACKGROUND The development of a unique radiofrequency (RF) cardiac ablation system, for the treatment of cardiac arrhythmias, is driven by the clinical need to safely create large uniform lesions while controlling lesion depth. Computational analysis of a finite element model of a three-dimensional, multielectrode, cardiac ablation catheter, powered by a temperature-controlled, multiphase, duty...
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