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Altered heart rate variability in severe sleep apnea syndrome

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Abstract

Heart rate variability (HRV) was studied in 19 patients with severe obstructive sleep apnea syndrome (OSAS), 17 with mild OSAS and 19 control subjects. A very low frequency (VLF) component during sleep in frequency-domain analysis was significantly higher in patients with severe OSAS, but not in patients with mild OSAS, compared with controls. It suggests that VLF is useful for the screening of severe OSAS, but not for mild OSAS. In addition, a low frequency (LF) component during sleep was also elevated in patients with severe OSAS. Further investigation is needed to understand the underlying causes of the LF elevation.

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Authors and Affiliations

  1. Department of Neurology, Kakegawa City General Hospital, 721 Sugiya, Kakegawa, Shizuoka, 436-8502, Japan

    Masakazu Wakai

  2. Department of Internal Medicine, Kakegawa City General Hospital, 721 Sugiya, Kakegawa, Shizuoka, 436-8502, Japan

    Youichi Samejima, Kazuyuki Goshima & Junnosuke Yamamoto

Authors
  1. Masakazu Wakai
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  2. Youichi Samejima
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  3. Kazuyuki Goshima
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  4. Junnosuke Yamamoto
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Correspondence to Masakazu Wakai.

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Wakai, M., Samejima, Y., Goshima, K. et al. Altered heart rate variability in severe sleep apnea syndrome. Sleep Biol. Rhythms 2, 87–88 (2004). https://doi.org/10.1111/j.1479-8425.2003.00073.x

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  • DOI: https://doi.org/10.1111/j.1479-8425.2003.00073.x

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