Communications system for an implantable medical device and a delivery device

A drug delivery monitoring system comprising:

• means for monitoring parameters of a drug delivery device;
• means for communicating the monitored parameters with an implantable medical device (IMD);
• means for processing the monitored parameters;
• and
• means for controlling a therapy delivered by the IMD based upon the monitored parameters of the drug delivery device.

An implantable medical device comprising:

• a controller for controlling cardiac therapy parameters;
• and
• one or more electrodes for delivering electrical stimulation to cardiac tissue and monitoring physiologic parameters of the tissue;
• wherein the controller receives the parameters from the one or more electrodes and information from a drug delivery device, the information identifying whether an expected drug therapy is delivered, wherein the controller varies the cardiac therapy delivery through the one or more electrodes based upon the parameters and the information.