Patent ID: 7289851

Claim:
An apparatus for determining a lead-related condition associated with an implantable medical device capable of being implanted in a patient, comprising: a sensing device sensing intrinsic signals of the patient; and a processing unit determining, in response to the sensed intrinsic signals, whether more than one of a first oversensing criteria, a second oversensing criteria and an impedance criteria have been satisfied, wherein the processing unit determines the first oversensing criteria is satisfied in response to determining that a predetermined number of RR-intervals that are within a first predetermined time period subsequent to a blanking period associated with a sensing device occur within a second predetermined time period, wherein the processing unit determines the first oversensing criteria is satisfied in response to determining that the number of RR-intervals within the first predetermined time period is greater than a first predetermined threshold, and wherein the processing unit determines the first oversensing criteria is satisfied in response to determining that a time duration window is not greater than a threshold time period and determining that a ratio of RR-intervals within the first predetermined time period occur.