Patent ID: 8249708

Claim:
A method comprising: determining with a first implantable medical device (IMD) a first electrical parameter value indicative of an impedance of an electrical path coupled to the first IMD, wherein determining the first electrical parameter value comprises: controlling the first IMD to deliver a first electrical signal between at least two electrodes electrically connected to the first IMD; controlling the first IMD to sense a second electrical signal subsequent to initiation of the delivery of the first electrical signal; and determining the first electrical parameter value based on the first electrical signal and the second electrical signal; activating delivery of electrical stimulation to a patient by a second IMD after determining the first electrical parameter value; determining with the first IMD a second electrical parameter value indicative of the impedance of the electrical path while the second IMD delivers electrical stimulation; determining whether the first and second electrical parameter values are within a threshold range of each other; and generating an interference indication in response to determining the first and second electrical parameter values are not within the threshold range of each other.