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Physiological monitor

  • US 7,891,355 B2
  • Filed: 05/03/2006
  • Issued: 02/22/2011
  • Est. Priority Date: 06/03/1998
  • Status: Expired due to Term
First Claim
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1. A physiological monitoring method comprising the steps of:

  • determining, using at least one processor, a plurality of perfusion values and a corresponding plurality of oxygen saturation values at a tissue site;

    characterizing, using said at least one processor, a constant oxygen consumption relationship between said perfusion values and said oxygen saturation values;

    detecting, using said at least one processor, perfusion-limited oxygen consumption at said tissue site when said constant oxygen consumption relationship is no longer valid; and

    adjusting fractional inspired oxygen according to the plurality of oxygen saturation values and so as to account for changes in the plurality of oxygen saturation values that result from perfusion-limited oxygen consumption.

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