Method and apparatus for non-invasive continuous monitoring of cerebrovascular autoregulation state
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United States of America Patent
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Nov 22, 2011
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May 4, 2006
app pub date -
Oct 27, 2005
filing date -
Oct 28, 2004
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Abstract
A non-invasive method for continuous real-time monitoring of cerebrovascular blood flow autoregulation state includes simultaneous non-invasive monitoring of intracranial blood volume respiratory waves and lung volume respiratory waves, real-time decomposition of intracranial blood volume respiratory waves and lung volume respiratory waves into narrowband sinewave first harmonic components, determination therefrom of the phase shift between intracranial blood volume respiratory wave and lung volume respiratory wave first harmonics' and derivation of cerebrovascular autoregulation state from that phase shift value.
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