A system for assigning zone rankings to a patient. The system includes a processor, at least one database, and a computer readable medium in communication with the at least one database and comprising one or more instructions that, when executed, can cause the processor to receive at least one physiological signal from a medical monitoring device that is worn by a patient； assign a normal zone ranking to the patient based upon historical patient data stored on the at least one database； determine one or more metrics from the at least one physiological signal of the patient； assign a first zone ranking to the patient based upon the one or more metrics, the first zone ranking selected from a plurality of abnormal zone rankings stored on the at least one database； determine one or more actions to initiate based upon the assigned first zone ranking； and initiate the one or more determined actions.
