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System and method of monitoring autoregulation

  • US 10,292,663 B2
  • Filed: 06/27/2016
  • Issued: 05/21/2019
  • Est. Priority Date: 06/30/2015
  • Status: Active Grant
First Claim
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1. A method for monitoring autoregulation, the method comprising:

  • receiving, by a processor, a blood pressure signal of a patient;

    receiving, by the processor, an oxygen saturation signal of the patient;

    determining, by the processor, a phase difference between the blood pressure signal and the oxygen saturation signal;

    determining, by the processor, a cerebral oximetry index (COx) value based on the blood pressure signal and the oxygen saturation signal;

    determining, by the processor, a confidence level for the COx value based on the phase difference between the blood pressure signal and the oxygen saturation signal; and

    determining, by the processor, an autoregulation status of the patient based at least in part on the confidence level determined based on the phase difference between the blood pressure signal and the oxygen saturation signal.

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