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A minimally invasive surgery for treatment of atrial fibrillation was developed with bilateral pulmonary vein isolation, mapping, and ablation of the ganglionic plexi and excision of the left atrial appendage. A prospective multicenter registry was created to evaluate the outcomes.The procedure was performed through bilateral minithoracotomies with video assistance. It included bilateral pulmonary...
A new noncontact multielectrode array (MEA) catheter has been developed to mathematically reconstruct endocardial potentials for LV mapping. This study was undertaken to determine if discrete subendocardial potentials from the left bundle branch (LBB) can be mathematically reconstructed. In 3 closed chest dogs (30-34 kg), the 9 Fr MEA catheter (64 electrodes on 40 mm x 16 mm balloon) was inserted...
To create long, linear transmural radiofrequency (RF) lesions in the atrium for ablation of atrial fibrillation, a spiral ribbon electrode catheter was designed. Two adjacent 20 mm flexible electrodes were formed by a spiral of metal ribbon (1 mm width) on a 7 Fr deflectable catheter either with or without 20 irrigation holes (Fig). In 9 anesthetized closed chest dogs (18-23 kg), the spiral electrodes...
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