Managing cardiac risk based on physiological markers

A method to track cardiac health of a patient, the method comprising:

• receiving, by a processor, electrocardiogram (ECG) signals from at least a wearable medical device;
• receiving, by the processor, motion data from a motion sensor;
• monitoring, by the processor, an activity level of the patient based at least in part on ECG data corresponding to the ECG signals and the motion data;
• detecting, by the processor, a decrease in the activity level of the patient based at least in part on the ECG data and the motion data, wherein the decrease in the activity level is detected upon comparing the activity level to a baseline activity level;
• in response to detecting the decrease in the activity level, increasing, by the processor, a frequency of monitoring status information corresponding to the monitored activity level,
• wherein the status information includes at least one cardiac measurement of the patient, and
• wherein the status information is received from a cardiac monitor;
• detecting, by the processor, a number of premature ventricular contractions in the status information upon increasing the frequency of monitoring the status information;
• comparing, by the processor, the number of premature ventricular contractions to a threshold number of premature ventricular contractions;
• and
• in response to detecting the decrease in the activity level and a determination that the number of premature ventricular contractions meets or exceeds the threshold number of premature ventricular contractions, decreasing, by the processor, a threshold for issuing an alert indicating a cardiac anomaly.