Detection of Atrial Fibrillation Based on the Pulse Wave Derived RR Interval Variability Analysis by Newly Developed "Watch Type" Plethysmograph
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概要
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<B>Aim:</B> We examined the possibility of the detection of arrhythmias such as atrial fibrillation (AF) based on the analysis of a measured pulse wave signals recorded by the newly developed "watch type" plethysmograph (HC1). <B>Methods:</B> HC1 and 24-hour Holter ECG were recorded simultaneously for 66 outpatients during 24 hours and the data were analyzed. Frequency domain analysis and time domain analysis were applied for the detection of AF. RR interval, frequency power (0.25–0.5 Hz), and coefficient of variation were measured. The rate of detection of AF and the duration of AF were evaluated based on those parameters. <B>Results:</B> AF was detected in 13 patients among 66 patients by 24-hour Holter ECG. The rate of detection of AF by HC1 was 81.3%. In addition, the difference between both methods for the duration of AF was 10–60 minutes. Most of the reason why AF could not be detected by HC1 caused by the incorrect measurement due to the body movement. <B>Conclusions:</B> AF detection by HC1 could be acceptable in clinical setting. Future clinical application for other arrhythmias by HC1 also can be expected.
著者
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Watanabe Ichiro
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Kasamaki Yuji
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Fujii Nobuyuki
Division of Cardiology, Department of Medicine, Nihon University School of Medicine
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Kunimoto Satoshi
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Ohta Masakatsu
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Nakai Toshiko
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Tano Ayako
Division Of Cardiology Nihon University School Of Medicine
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Hirayama Atsushi
Division Of Cardiology Department Of Internal Medicine Nihon University School Of Medicine
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Fujii Nobuyuki
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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Aizawa Yoshihiro
Division of Cardiology, Department of Medicine, Nihon University School of Medicine
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Saito Yuuki
Division of Cardiology, Department of Medicine, Nihon University School of Medicine
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Kasamaki Yuji
Division of Cardiology, Department of Medicine, Nihon University School of Medicine
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