Patent ID: 8781584

Claim:
A method for facilitating selection of a vector from among a plurality of pacing vectors for pacing a first chamber of a heart, the method comprising: delivering a pacing pulse to capture a first heart chamber using a combination of electrodes comprising at least a first electrode and a second electrode of the plurality of pacing vectors; determining a first time interval between the pacing pulse and a sensed event in a second heart chamber; determining a capture detection window in response to the determined first time interval; iteratively decreasing a pacing pulse magnitude delivered in the first heart chamber until an event in the second heart chamber is not sensed during the determined capture detection window; lengthening the capture detection window in response to a depolarization of the second heart chamber not being sensed during the determined capture detection window; and detecting a change in capturing electrodes of the combination of electrodes in response to sensing an event in the second heart chamber during the lengthened capture detection window after not sensing an event in the second heart chamber during the determined capture detection window.