Patent ID: 7981042

Claim:
A medical system, comprising: an external respiratory therapy device configured to deliver an external respiratory therapy to a patient, the external respiratory therapy device including: a respiratory event detector configured to detect respiratory events; control circuitry configured to adjust the respiratory therapy based on the detected respiratory events; one or more cardiac electrodes configured to sense cardiac electrical activity, the one or more cardiac electrodes located external to the patient; circuitry, disposed within a housing of the external respiratory therapy device, configured to generate an electrocardiogram (ECG) signal based on the sensed cardiac electrical activity; a cardiac event detector configured to detect cardiac dysfunction events based on the ECG signal; and circuitry, disposed within the external respiratory therapy device housing, the circuitry configured to collect information based at least in part on the ECG signal, the collected information stored during each of multiple uses of the respiratory therapy device, the multiple uses corresponding to multiple sleep periods during which the patient uses the external respiratory therapy device; and a processor located external to the patient and configured to analyze cardiac conditions of the patient over the multiple uses based on the collected information.