A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
354/22, 326/12.2
A61B 5/02 (2006.01) A61B 5/024 (2006.01) G06F 17/00 (2006.01)
Patent
CA 1257395
- 337 - ABSTRACT Apparatus for heart rate fluctuation power spectrum analysis obtains an electrocardiogram signal from an electrocardiograph machine and a respiratory rate signal from an electroplethysmograph machine. These signals are processed by a data acquisition system to provide output suitable for heart rate fluctuation power spectrum analysis by a mini-micro computer. Data manipulation includes correction of artifacts by substituting an appropriate heartbeat interval for detected heartbeat intervals for which the variance exceeds a preselected range of slewing rates. Trending of data and overlapping data analysis increase the analytical capabilities of the apparatus. Methods of treatment for conditions manifested by abnormalities in a heart rate fluctuation power spectrum involve applying treatments when spectral abnormalities are observed. Specific abnormalities indicating the need for treatment include: a level belowabout 0.1 (beats/min.)2 in the power spectrum of heart rate fluctuations at a frequency between about 0.04 and about 0.10 Hz; a marked increase to above about 10 (beats/min.)2 in heart rate fluctuations at a frequency between 0.04 and about 0.10 Hz; and a ratio of the area under a heart rate fluctuation power spectrum of a peak at a frequency between about 0.04 and about 0.10 Hz to the area under a peak in the respiratory heart rate fluctuation power spectrum centered at the mean respiratory rate (as measured by the apparatus) at about 0.1 Hz as having a value less than 2.0 for longer than or equal to about one hour or as having an absolute value greater than about 50.
510803
Arai Makoto R.
Gordon David
Mcalpine Laura E.
Board Of Trustees Of University Of Illinois
Ridout & Maybee Llp
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