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Physiological parameter system

  • US 8,721,542 B2
  • Filed: 08/07/2008
  • Issued: 05/13/2014
  • Est. Priority Date: 03/08/2004
  • Status: Active Grant
First Claim
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1. A patient monitor comprising:

  • a first input configured to receive a first parameter signal, said first parameter signal indicative of a first physiological parameter of a patient and said first parameter signal responsive to a first physiological sensor monitoring said patient;

    a second input configured to receive a second parameter signal, the second parameter signal indicative of a second physiological parameter of the patient and responsive to a second physiological sensor monitoring said patient, the second physiological parameter different than the first physiological parameter; and

    a processor responsive to a combination of both of said first and second inputs to generate a diagnostic indication of a patient condition or an alarm output, wherein the processor is configured to;

    determine trend data based on the second parameter signal;

    set a variable threshold in response to the trend data;

    determine a measurement reading of first physiological parameter based on the first parameter signal;

    compare the measurement reading of the first physiological parameter to the variable threshold; and

    generate the diagnostic indication or the alarm output based at least in part on said comparison.

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