Locations of High Contact Force During Left Atrial Mapping in Atrial Fibrillation Patients Electrogram Amplitude and Impedance Are Poor Predictors of Electrode-Tissue Contact Force for Ablation of Atrial Fibrillation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023001%3A_____%2F13%3A00058779" target="_blank" >RIV/00023001:_____/13:00058779 - isvavai.cz</a>
Result on the web
<a href="http://circep.ahajournals.org/content/6/4/746" target="_blank" >http://circep.ahajournals.org/content/6/4/746</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1161/CIRCEP.113.978320" target="_blank" >10.1161/CIRCEP.113.978320</a>

Result language
angličtina
Original language name
Locations of High Contact Force During Left Atrial Mapping in Atrial Fibrillation Patients Electrogram Amplitude and Impedance Are Poor Predictors of Electrode-Tissue Contact Force for Ablation of Atrial Fibrillation
Original language description
Background-During radiofrequency ablation, high electrode-tissue contact force (CF) is associated with increased risk of steam pop and perforation. The purpose of this study, in patients undergoing ablation of paroxysmal atrial fibrillation, was to: (1)identify factors producing high CF during left atrial (LA) and pulmonary vein mapping; (2) determine the ability of atrial potential amplitude and impedance to predict CF; and (3) explore the feasibility of controlling radiofrequency power based on CF. Methods and Results-A high-density map of LA/pulmonary veins (median 328 sites) was obtained in 18 patients undergoing atrial fibrillation ablation using a 7.5-Fr irrigated mapping/ablation catheter to measure CF. Average CF was displayed on the 3D map. For 5682 mapped sites, CF ranged 1-144 g (median 8.2 g). High CF (>= 35 g) was observed at only 118/5682 (2%) sites, clustering in 6 LA regions. The most common high CF site (48/113 sites in 17/18 patients) was located at the anterior/righ
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
FA - Cardiovascular diseases including cardio-surgery
OECD FORD branch
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Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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