A method of monitoring patient status is disclosed. Electrical signals are received from one or more implanted sensors of a cardiac rhythm management device. Two or more index values are calculated from the electrical signals. A composite index is determined from the two or more index values, and a status notification associated with the composite index is provided. In a system for monitoring patient status, a processor is configured to receive electrical signals from an implanted cardiac rhythm management device, calculate two or more index values from the electrical signals, and determine a composite index from the two or more index values. The system incorporates a memory that is in communication with the processor and an interface in communication with the processor, where the interface is configured to communicate a status notification associated with the composite index.