The prevalence and characteristics of candidates for percutaneous left atrial appendage occlusion using a WATCHMAN device among patients who underwent atrial fibrillation ablation in a Japanese population

Background Percutaneous left atrial appendage occlusion (LAAO) using a WATCHMAN device could be a treatment option for patients with non-valvular atrial fibrillation (AF) with thromboembolic and bleeding risk. We sought to determine the prevalence and characteristics of patients with AF ablation who...

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Bibliographic Details
Published in:Journal of echocardiography 2021-12, Vol.19 (4), p.243-249
Main Authors: Kemi, Yuta, Yamashita, Eiji, Fujiwara, Takeshi, Kario, Kazuomi, Sasaki, Takehito, Minami, Kentaro, Miki, Yuko, Goto, Koji, Take, Yutaka, Nakamura, Kohki, Naito, Shigeto
Format: Article
Language:English
Subjects:
Atrial Appendage - diagnostic imaging
Atrial Appendage - surgery
Atrial Fibrillation - diagnostic imaging
Atrial Fibrillation - epidemiology
Atrial Fibrillation - surgery
Cardiac Catheterization
Cardiology
Echocardiography, Transesophageal
Humans
Imaging
Japan - epidemiology
Medicine
Medicine & Public Health
Original Investigation
Prevalence
Radiology
Retrospective Studies
Treatment Outcome
Ultrasound
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Summary:Background Percutaneous left atrial appendage occlusion (LAAO) using a WATCHMAN device could be a treatment option for patients with non-valvular atrial fibrillation (AF) with thromboembolic and bleeding risk. We sought to determine the prevalence and characteristics of patients with AF ablation who are potential candidates for WATCHMAN implantation in a Japanese population. Methods We enrolled 2443 consecutive patients who had previously undergone AF ablation and transesophageal echocardiography (TEE). We assessed their clinical characteristics and measured their LAA orifice diameter and depth retrospectively using the obtained TEE images. We defined patients who met both anatomical criteria (LAA orifice max diameter: 17–31 mm and LAA max depth > LAA orifice max diameter) and clinical criteria (CHA 2 DS 2 -VASc score ≥ 2 and HAS-BLED score ≥ 3) as LAAO candidates. Results Among the 2443 enrolled patients, 361 (15%) met the clinical criteria, and 1928 (79%) met the anatomical criteria. Thus 12% (293/2443) of the total patient group met the criteria of LAAO candidates. LAAO candidates showed larger left atrial (LA) volume (77.6 ± 30.1 vs. 67.7 ± 29.1 mL, P 
ISSN:1349-0222
1880-344X
DOI:10.1007/s12574-021-00538-5