System and method for determining insulin bolus quantities

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

• determining with a processor whether a time duration of glucose lowering action of the subsequently administered recommended insulin bolus quantity extends from the current time interval into at least a next adjacent time interval, and
• computing with the processor 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.

A method of computing a recommended insulin bolus quantity when a measured glucose value in a current time interval of a number of adjacent time intervals, each of the number of adjacent time intervals defining an associated target glucose value and an insulin sensitivity value, 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 extends from the current time interval into the next adjacent time interval, the method comprising:

• determining with a processor 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 with the processor 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 with the processor 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 or equal to a first threshold value and the second difference is less than or equal to a second threshold value.