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Method and apparatus for detection of venous pulsation

  • US 8,632,472 B2
  • Filed: 01/17/2012
  • Issued: 01/21/2014
  • Est. Priority Date: 09/27/2006
  • Status: Active Grant
First Claim
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1. A method for detecting venous pulsation with a patient monitor having a microprocessor, comprising:

  • deriving a metric of the pulse shape of one or more plethysmographic signals with the microprocessor;

    deriving a phase comparison of the plethysmographic signals with the microprocessor;

    combining the metric of the pulse shape and the phase comparison to generate a venous pulsation metric; and

    detecting the presence of venous pulsation with the microprocessor based on the venous pulsation metric.

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