Patent ID: 8308649

Claim:
An implantable cardiac device comprising: a cardio-mechanical parameter detector configured for in vivo placement in a living subject, that detects a physiologic parameter representing a mechanical change in at least one chamber of the heart of the subject that is affected by status of cardiovascular disease in the subject associated with sympathetic nerve activation, and that emits a detector output corresponding to said physiologic parameter; a housing configured for in vivo implantation in the subject; a processor in said housing and in communication with said cardio-mechanical detector to receive said detector output therefrom, that extracts a Mayer wave component, selected from the group consisting of a low frequency Mayer wave component and a very low frequency Mayer wave component, from said detector output; and an analyzer in said housing that compares the extracted Mayer wave component to a predetermined reference to obtain an analysis result indicative of said status of cardiovascular disease, said analyzer emitting an analyzer output signal corresponding to said analysis result.