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Reducing nuisance alarms

  • US 8,792,949 B2
  • Filed: 03/06/2009
  • Issued: 07/29/2014
  • Est. Priority Date: 03/31/2008
  • Status: Active Grant
First Claim
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1. A pulse oximetry system configured to generate an alarm indicating that a physiological parameter has exceeded a predetermined threshold, the pulse oximetry system comprising:

  • an oxygen saturation module for;

    calculating a first estimated value of the physiological parameter and a second estimated value of the physiological parameter;

    an accuracy module for;

    calculating a first accuracy of the first estimated value and a second accuracy of the second estimated value;

    determining that the second estimated value of the physiological parameter exceeds the predetermined threshold; and

    comparing the second accuracy to the first accuracy to determine whether accuracy data has degraded; and

    an alarm module for;

    based on determining by the accuracy module that the accuracy data has degraded, calculating a delay time period; and

    delaying generating the alarm for the calculated delay time period.

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