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Methods of non-invasively estimating intrapulmonary shunt fraction and measuring cardiac output

  • US 6,258,038 B1
  • Filed: 12/16/1999
  • Issued: 07/10/2001
  • Est. Priority Date: 09/09/1998
  • Status: Expired due to Term
First Claim
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1. A method of estimating a cardiac output of a patient, comprising:

  • determining an oxygen saturation of arterial blood of the patient;

    determining a fraction of inspired oxygen of the patient;

    determining a pulmonary capillary blood flow of the patient; and

    determining an intrapulmonary shunt fraction from said oxygen saturation and said fraction of inspired oxygen.

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