Electrocardiographic and Chronobiological Features of Paroxysmal AV Block Recorded by Ambulatory Electrocardiography

• Saito Ken

  Department of Chronomedicine, Institute of Health Biosciences, the University of Tokushima Graduate School

• Takeda Shiho

  School of Health Sciences, the University of Tokushima

• Saito Yuko

  Department of Cardiovascular Medicine, Institute of Health Biosciences, the University of Tokushima Graduate School

• Kawamura Mami

  School of Health Sciences, the University of Tokushima

• Yoshikawa Yoko

  Department of Cardiology, Sekishinkan Hospital

• Yano Hayato

  Department of Cardiology, Sekishinkan Hospital

• Sata Masataka

  Department of Cardiovascular Medicine, Institute of Health Biosciences, the University of Tokushima Graduate School

抄録

The goal of this study was to investigate the electrocardiographic and chronobio-logical features of paroxysmal atrioventricular (AV) block (PAVB) using data from ambulatory electrocardiography (AECG). The study population consisted of five men and six women aged from 47 to 82 years of age. Main presenting symptoms were pre-syncope in five patients (45.5%) and syncope in three patients (27.3%). Organic cardiovascular diseases were seen in eight patients (72.7%), and AV conduction disturbances were seen in six patients (54.5%), such as right bundle branch block, first to second degree AV block on standard 12-lead electrocardiography. Incidence of PAVB events were 1-329 (37.9 ± 98.0) episodes/patient/day, and the maximum pause during Holter recordings was 3.3-12.4 (6.39 ± 3.09) seconds. This maximum pause caused by intrinsic AV block was longer than that of vagally mediated AV block (8.4 ± 3.2 sec vs 4.7 ± 1.0 sec, p<0.05). In chronobiological analysis, episodes of PAVB exhibited a circadian rhythm characterized by a peak between 2:00 am and 4:00 am and a trough between 0:00 pm and 2:00 pm. AECG is a useful tool to detect the maximum pause occurring during sleep and provides critical data necessary to prevent the sudden cardiac death caused by PAVB. J. Med. Invest. 61: 380-387, August, 2014

収録刊行物

• The Journal of Medical Investigation

  The Journal of Medical Investigation 61 (3.4), 380-387, 2014

  国立大学法人　徳島大学医学部

キーワード

• Paroxysmal AV block
• Ambulatory electrocardiography
• Circadian rhythm
• Syncope
• Right bundle branch block

詳細情報

• CRID: 1390001204243213056
• NII論文ID: 130004822745
• NII書誌ID: AA11166929
• DOI: 10.2152/jmi.61.380
• ISSN: 13496867
• ISSN: 13431420
• PubMed: 25264058
• Web Site: http://repo.lib.tokushima-u.ac.jp/109588
• Web Site: https://www.jstage.jst.go.jp/article/jmi/61/3.4/61_380/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2015381628
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
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