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Kohno T, Kimura T, Fukunaga K, Yamasawa W, Fujisawa T, Fukuoka R, Nakajima K, Kashimura S, Kunitomi A, Katsumata Y, Nishiyama T, Nishiyama N, Aizawa Y, Fukuda K, Takatsuki S. Prevalence and clinical characteristics of obstructive- and central-dominant sleep apnea in candidates of catheter ablation for atrial fibrillation in Japan. Int J Cardiol 2018; 260:99-102. [PMID: 29622460 DOI: 10.1016/j.ijcard.2018.01.103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 01/05/2018] [Accepted: 01/22/2018] [Indexed: 02/06/2023]
Abstract
INTRODUCTION We aimed to study the prevalence and types of sleep apnea (SA) as well as their clinical characteristics in atrial fibrillation (AF) ablation candidates in Japan. METHODS Before catheter ablation, 197 consecutive AF patients (age: 60 ± 9 years, body mass index; 25.0 ± 3.0) were evaluated with portable polygraphy. We compared the clinical characteristics, according to the severity of SA as well as its types, as defined by the presence of obstruction and the mixed vs. central apnea indices. RESULTS The mean apnea-hypopnea index (AHI) was 17.7 ± 11.9, with 135 AF patients having an AHI ≥10 (68.5%). Patients with an AHI ≥10 had a significantly higher body mass index, plasma brain natriuretic peptide (BNP) level, prevalence of hypertension, and larger left atrial size. Among patients with an AHI ≥10, the incidence of obstructive-dominant SA was 60.9% and that of central-dominant SA was 7.6%. The prevalence of hypertension was significantly higher in obstructive-dominant SA patients (obstructive vs. central: 48.3% vs. 20.0%, P = 0.038). The obstructive apnea index correlated with plasma BNP level and age, but the central and mixed apnea indices did not. CONCLUSIONS The prevalence of SA was common in AF ablation candidates, even without an obesity epidemic, and the SA type was predominantly obstructive. Portable polygraphy was useful for detecting undiagnosed SA patients in AF ablation candidates.
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Affiliation(s)
- Takashi Kohno
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan.
| | - Takehiro Kimura
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Koichi Fukunaga
- Department of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Wakako Yamasawa
- Department of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan; Department of Laboratory Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Taishi Fujisawa
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Ryoma Fukuoka
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Kazuaki Nakajima
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Shin Kashimura
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Akira Kunitomi
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | | | - Takahiko Nishiyama
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Nobuhiro Nishiyama
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Yoshiyasu Aizawa
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Keiichi Fukuda
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
| | - Seiji Takatsuki
- Department of Cardiology, Keio University School of Medicine, Tokyo, Japan
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