Method and implantable system for blood-glucose concentration monitoring using parallel methodologies

An implantable cardiac stimulation device comprising:

• an EGM sensing circuit configured to sense one or more cardiac electrical signal and, to generate EGM data indicative of the one or more cardiac electrical signal;
• an EGM analysis unit configured to receive the EGM data from the EGM sensing circuit and, to generate a first metric of blood-glucose concentration using the EGM data;
• an oxygen metabolism input circuit configured to receive oxygen metabolism signals indicative of one or more property of oxygen metabolism and, to generate oxygen metabolism data using the oxygen metabolism signals;
• an oxygen metabolism analysis unit configured to receive the oxygen metabolism data from the oxygen metabolism input circuit, and to generate a second metric of blood-glucose concentration using the oxygen metabolism data;
• a blood-glucose concentration analysis unit configured to receive the first metric of blood-glucose concentration and the second metric of blood-glucose concentration, and to generate an enhanced metric of blood-glucose concentration;
• and
• an effector that is configured to deliver at least one of a therapy, a diagnosis and a warning in response to the enhanced metric of blood-glucose concentration.