We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Left atrial voltage mapping with a direction‐independent grid catheter: Comparison with a conventional circular mapping catheter.
- Authors
Masuda, Masaharu; Asai, Mitsutoshi; Iida, Osamu; Okamoto, Shin; Ishihara, Takayuki; Nanto, Kiyonori; Kanda, Takashi; Tsujimura, Takuya; Matsuda, Yasuhiro; Okuno, Shota; Hata, Yosuke; Mano, Toshiaki
- Abstract
Introduction: A recently introduced grid mapping catheter (GMC) is designed for better electrode‐tissue contact and can collect bipolar signals both along and across the splines, which may allow more efficient voltage map generation independent of propagation direction. We compared the GMC with a conventional circular mapping catheter (CMC) for left atrial (LA) voltage mapping. Methods: This study included 20 consecutive patients undergoing repeat ablation for recurrent atrial fibrillation who had demonstrated LA low‐voltage areas (LVAs, <0.10 mV). Following pulmonary vein isolation, LA voltage mapping was performed twice, once using the GMC and once using the CMC. Results: Voltage mapping was more efficient using the GMC than the CMC in terms of mapping time (459 [404, 543] vs 602 [496, 814] seconds; P = .014) and the number of mapping points (2446 [2099, 3104] vs 1841 [1494, 2314]; P = .002). The incidence of catheter‐induced ectopies was lower (44 [28, 62] vs 114 [74, 188]; P < .0001) using the GMC. The GMC utilizing all bipoles detected LVAs in 85% of patients with LVAs detected by CMC. LVA measurements were significantly smaller on maps generated by the GMC using bipoles along or across the splines than those measured with the CMC (11.1 [4.6, 17.2] or 9.7 [2.5, 16.0] vs 16.4 [6.8, 26.8] cm2; P = .008 and P = .001, respectively), and were even smaller when using all bipoles (7.9 [1.1, 13.5] cm2, P = .0001). Conclusion: The GMC allowed a more efficient mapping procedure and enabled more selective identification of LVAs with smaller LVA size.
- Subjects
ATRIAL arrhythmias; ATRIAL fibrillation; BODY surface mapping; CARDIAC catheterization; CATHETER ablation; CATHETERS; BIOELECTRIC impedance; TIME; DESCRIPTIVE statistics; LEFT heart atrium
- Publication
Journal of Cardiovascular Electrophysiology, 2019, Vol 30, Issue 12, p2834
- ISSN
1045-3873
- Publication type
Article
- DOI
10.1111/jce.14263