Patent Document ID: 9649498
Application ID: 14601719
Patent Flag: 1

Claim One:
1. A system comprising: an implantable medical device configured to deliver pacing stimuli to a heart; and at least one processor configured to: for a set of at least two pacing vectors, wherein each vector is at least partially defined by a first electrode and a second electrode, deliver a first pacing stimulus at a first specified pacing energy having a voltage amplitude in a predetermined range of voltage amplitudes; identify, from the set of at least two pacing vectors, a subset of pacing vectors where a cardiac depolarization occurs in response to the delivered first pacing stimulus; and determine a first pacing threshold value for each pacing vector only in the identified subset of pacing vectors, including through a plurality of voltage amplitudes in the predetermined range of voltage amplitudes, iteratively decrease the voltage amplitude of the first pacing stimulus, deliver a second pacing stimulus at the iteratively decreased voltage amplitude, and determine whether cardiac depolarization occurred in response to the delivered second pacing stimulus.