Method and apparatus for providing notification function in analyte monitoring systems
Method and apparatus for determining and outputting projected alarms or notifications associated with anticipated hyperglycemic or hypoglycemic conditions are provided. Systems and kits employing the devices described herein executing the one or more routines described are also provided.
1. A method, comprising:
generating, using one or more processors, a plurality of data points associated with a monitored analyte concentration;
determining, using the one or more processors, whether a current data point of the plurality of data points is within a predetermined threshold zone, wherein if it is determined that the current data point is within the predetermined threshold zone, determining a rate of change of an analyte level based on the generated plurality of data points;
determining, using the one or more processors, if the rate of change indicates a projected glucose value exceeding an alarm threshold within a predetermined amount of time;
performing, using the one or more processors, a line fit analysis of a slope based on the plurality of data points associated with the monitored analyte concentration;
asserting an alarm associated with the monitored analyte concentration when the determined rate of change indicates that the projected glucose value will exceed the alarm threshold within the predetermined amount of time, and when the line fit of the slope is not within an acceptable level; and
controlling administration of therapy based on the assertion of the alarm associated with the monitored analyte concentration.
2. The method of claim 1 , wherein performing the line fit analysis of the slope includes determining mean value error based on the plurality of data points within a predetermined deviation range.
3. The method of claim 2 , wherein the predetermined deviation range is about 10%.
4. The method of claim 1 , further including evaluating an anticipated alarm condition persistence including determining whether the determined rate of change indicates that the projected glucose value exceeds the alarm condition during a predetermined time period.
5. The method of claim 4 , wherein the predetermined time period includes a consecutive time period spanning about 30 minutes or less, about 25 minutes or less, about 20 minutes or less, about 15 minutes or less, or about 10 minutes or less.
6. The method of claim 4 , wherein the anticipated alarm condition is one of an anticipated hypoglycemia alarm or an anticipated hyperglycemia alarm.
7. The method of claim 1 , wherein the rate of change is determined based on a least squares technique.
8. The method of claim 1 , wherein the acceptable level of the slope of the line fit includes an acceptable level of mean square error based on the plurality of data points associated with the monitored analyte concentration.
9. The method of claim 8 , wherein the acceptable level of mean square error includes the mean square error of the plurality of data points associated with the monitored analyte concentration deviating from the slope being less than a predetermined value.