Chronotropic status monitor for implantable cardiac device

摘要

An implantable cardiac device with an exertion level sensor is programmed to determine a heart rate appropriate for a given measured exertion level in accordance with a physiological model and/or previously collected physiologic data. The device then compares the model's heart rate with a measured intrinsic heart rate. Based upon this data, the device is able to recognize changes in the patient's heart rate response and predict or recognize a chronotropically incompetent condition.