Quantitative calibration of breathing monitors with transducers placed on both rib cage and abdomen
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United States of America Patent
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Jul 2, 2002
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N/A
app pub date -
Jun 16, 2000
filing date -
Jun 18, 1999
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Abstract
A method for calibrating non-invasive breathing monitors with sensors placed on the rib-cage and abdomen of a subject includes determining an initial scaling factor and an optimal multiplicative factor for the readings of the rib-cage and abdomen sensors using one of a least squares, linear regression, or multi-linear regression techniques. A current scaling factor is determined on a periodic basis using qualitative device calibration techniques. The current scaling factor is used to monitor breathing and diagnose obstructive apneas. Furthermore, the optimal multiplicative and the current scaling factor are used to determine the current tidal volume.
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