An Evaluation Method for Heart Rate Variability, by Using Acceleration Plethysmography

DOI 被引用文献15件 参考文献13件
  • TAKADA Haruko
    <I>College of Medical Engineering, Suzuka University of Medical and Science</I>
  • OKINO Kazuo
    <I>Research Section, U-medica Inc. Co.</I>
  • NIWA Yumiko
    <I>Clinical Examination, Meitetsu Hospital</I>

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Objects We have recently developed a new type of acceleration plethysmography (APG) machine and software. This APG system functions to indicate heart rate variability, by using the coefficient of the variation of the a-a intervals (CVaa%) . We tried to evaluate the validity of the APG system to estimate heart rate variability, instead of using ECG.<BR>Methods We simultaneously recorded an ECG and an APG by using a 2-channel APG system. We examined the difference between the a-a intervals (Taa) of an APG and the R-R interval of an ECG. Next, APG waveforms of 121 healthy people and 26 diabetics were recorded, and the mean CVaa% in each age category for healthy people and diabetics were calculated.<BR>Results 1) All differences between the Taa and the R-R interval were within 10 msec., and the multiple correlation coefficient was 0.999175.2) The mean CVaa% was 0.2 to 1.5% bigger than the mean coefficient of the variation of the R-R intervals (CVRR%) in all age categories. 3) The mean CVaa% decreased by age. 4) In ages 40-60, mean CVaa% of diabetics was significantly lower than that of healthy people.<BR>Conclusion The APG system is suitable to estimate heart rate variability. And, when we want to evaluate heart rate variability by CVaa% of an APG in stead of CVRR% of an ECG, a standard value of CVaa% in each age is necessary. The APG system has some possibilities for explanation of a mechanism of autonomic-nerve-related diseases.

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  • 総合健診

    総合健診 31 (4), 547-551, 2004

    一般社団法人 日本総合健診医学会

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