System and method for determining insulin bolus quantities

With a diabetes care system having a number of adjacent time intervals each defining an associated target glucose value and an insulin sensitivity value, a method of computing a recommended insulin bolus quantity when a measured glucose value in a current one of the time intervals exceeds the target glucose value for the current time interval, the method comprising:

• determining whether a time duration of glucose lowering action of the subsequently administered recommended insulin bolus quantity spans the current time interval and at least a next adjacent time interval, and
• computing the recommended bolus quantity as a function of the measured glucose value, the target glucose value for the current time interval and the insulin sensitivity value for the current time interval only if the time duration of glucose lowering action of the subsequently administered recommended insulin bolus quantity is confined to the current time interval.

With a diabetes care system having a number of adjacent time intervals each defining an associated target glucose value and an insulin sensitivity value, a method of computing a recommended insulin bolus quantity when a measured glucose value in a current one of the time intervals exceeds the target glucose value for the current time interval and when a time duration of glucose lowering action of the recommended insulin bolus quantity to be administered spans the current time interval and the next adjacent time interval, the method comprising:

• determining a first difference as a difference between the target glucose value for the current time interval and the target glucose value for the next adjacent time interval,
• determining a second difference as a difference between the insulin sensitivity value for the current time interval and the insulin sensitivity value for the next adjacent time interval, and
• computing the recommended bolus quantity as a function of the measured glucose value, the target glucose value for the current time interval and the insulin sensitivity value for the current time interval only if the first difference is less than a first threshold value and the second difference is less than a second threshold value.