System for medical interaction with a patient, comprising one or more computing devices configured to: electronically receive medical data via a communication link； determine a beginning of a breathing interval using at least a portion of the medical data； determine an end of the breathing interval using the at least a portion of the medical data； determine a time interval between the beginning of the breathing interval and the end of the breathing interval； and assign a level of importance out of a plurality of levels of importance to the time interval, wherein high levels of importance are assigned to short measured time intervals and successively lower levels of importance are assigned to successively longer measured time intervals.
