Analytical Sciences

Innovative Instrumental Analysis of Heartbeat Signals and Its Clinical Application

Shizuo FUJIWARA,*¹ Kozo SHIRATO,*² Norio HIGUCHI,*² Mizuho MAEKAWA,*³ Naoto SHIMETANI,*⁴ Sunao WATANABE,*⁵ and Ikunosuke SAKURABAYASHI*³

*1 Research Institute for Integrated Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1205, Japan
*2 Center for Medical Instrumentation Science, 2-10-2 Kawagishi, Toda, Saitama 835-0015, Japan
*3 Saitama Medical Center, Jichi Medical University, 1-847 Amanuma, Omiya, Saitama 330-8503, Japan
*4 International University of Health and Welfare, Atami Hospital, 13-1 Higashikaigan, Atami, Shizuoka 413-0012, Japan
*5 St. Luke's International Hospital, Heart Center, 9-1 Akashi, Chuo, Tokyo 104-8560, Japan

A new apparatus has been built that annexes a normal electrocardiograph, ECG, with the aim to enhance its capacity. It adds the normal ECG power to superpose multiple records of ECG altogether and averages out them and, further, makes sophisticated analysis, such as normalizing the peak heights, evaluating the half-line widths of the peaks, or that of the standard deviations of measurements like the inter peak distances. The results of the said calculations have not been obtainable using the former instruments, and are expected to be useful for clinicians.

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