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Systems and methods for detecting hypoglycemic events having a reduced incidence of false alarms

  • US 8,439,837 B2
  • Filed: 10/30/2007
  • Issued: 05/14/2013
  • Est. Priority Date: 10/31/2006
  • Status: Active Grant
First Claim
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1. A method for establishing a critical sampling rate for a continuous glucose monitor having a continuous glucose sensor, processor, and memory, the method comprising the steps of:

  • establishing with the processor and memory of the glucose monitor, a preferred number of measurements within a target zone, a predetermined critical threshold, and a predetermined hypoglycemic threshold, in which the target zone comprises a number of glucose measurements measured within a glucose concentration interval and within a time interval wherein said preferred number is about three;

    measuring with a continuous glucose sensor a plurality of glucose concentrations at a predetermined first sampling rate;

    calculating with the processor an actual rate of change in glucose concentration based on said plurality of glucose concentrations;

    modifying with the processor, said first sampling rate to a second sampling rate using a function based on said preferred number of measurements within a target zone, said predetermined critical threshold, said predetermined hypoglycemic threshold, and said actual rate of change in glucose concentration; and

    activating a hypoglycemic alarm to detect a hypoglycemic glucose concentration once said first sampling rate is modified to give a second sampling rate.

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