A method of reproducing from a storage medium video data and graphics data for displaying a menu screen. Electrically conductive bond fingers are disposed on a first surface of the package substrate. A sensor measures a parameter related to cardiac output of the patient, the sensor measuring this parameter in a time window within a time of operation with the first AV-delay value, and in a time window within the time of operation with said second AV-delay value, and in a time window within the time of operation after the return back to the first AV-delay value.