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ADAPTATIONS TO OPTIVOL ALERT ALGORITHM

  • US 20080024293A1
  • Filed: 12/07/2006
  • Published: 01/31/2008
  • Est. Priority Date: 07/28/2006
  • Status: Active Grant
First Claim
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1. A computer-readable medium programmed with instructions for performing a method of monitoring for abnormally high or abnormally low fluid levels, the medium comprising instructions for causing a programmable processor to:

  • intermittently receive a measured physiological parameter value related to a patient'"'"'s fluid level;

    calculate a short-term representative value and an associated long-term representative value of the measured physiological parameter values after receipt of one or more of the measured physiological parameter values;

    compare each short-term representative value and the associated long-term representative value to determine if the short-term representative value indicates normal fluid levels, the short-term representative value indicating normal fluid levels when, depending on whether monitoring for abnormally high fluid levels or abnormally low fluid levels, predeterminately one of (a) the short-term representative value is greater than the long-term representative value minus a first predetermined hysteresis value or (b) the short-term representative value is less than the long-term representative value plus a second predetermined hysteresis value;

    cumulatively sum a difference between the short-term representative value and the associated long-term representative value when the short-term representative value does not indicate normal fluid levels; and

    reset the cumulative sum when the short-term representative value indicates normal fluid levels.

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