A Lattice-Tip Temperature-Controlled Radiofrequency Ablation Catheter
Durability of Pulmonary Vein Isolation and Linear Lesion Block
Vivek Y. Reddy, Petr Neužil, Petr Peichl, Gediminas Rackauskas, Elad Anter, Jan Petru, Moritoshi Funasako, Kentaro Minami, Audrius Aidietis, Germanas Marinskis, Andrea Natale, Hiroshi Nakagawa, Warren M. Jackman and Josef Kautzner
The Lattice-Tip Catheter Achieves High Lesion Durability
(Left) The lattice-tip and a standard-tip catheter are dipped into green ink and blotted onto tissue: the lattice-tip catheter-tissue interaction is ∼7-fold greater, and during ablation, results in a substantially larger thermal footprint. (Right) The durability of the lattice-tip lesions is shown, as assessed by protocol-mandated invasive remapping in 27 patients. Pulmonary vein isolation durability is expressed for: 1) individual veins; 2) ipsilateral pulmonary vein pairs; and 3) on a per patient basis (that is, percent of patients with all veins isolated). Also shown is the persistence of bidirectional block across the various linear lesions. CT = cavotricuspid; LA = left atrial; PV = pulmonary vein.