CPC A61B 5/341 (2021.01) [A61B 5/25 (2021.01); A61B 5/349 (2021.01); A61B 5/352 (2021.01); A61B 5/7221 (2013.01); A61N 1/3621 (2013.01); A61N 1/39622 (2017.08)] | 17 Claims |
1. A method comprising:
sensing a plurality of cardiac signals on a plurality of sensing vectors formed from a plurality of electrodes, each of the cardiac signals sensed on a respective one of the plurality of sensing vectors;
determining, for each of the plurality of sensing vectors, a respective sensing vector metric of the respective sensed cardiac signal, wherein determining each of the sensing vector metrics comprises comparing an amplitude of the respective sensed cardiac signal to an amplitude threshold;
determining, for each of the plurality of sensing vectors, a respective morphology metric associated with a morphology of the respective sensed cardiac signal, wherein determining each of the respective morphology metrics associated with the morphology of the respective sensed cardiac signal comprises:
identifying, for each of the plurality of sensing vectors, one or more pulses within the respective sensed cardiac signal;
determining, for each of the plurality of sensing vectors, whether each of the one or more pulses identified within the respective cardiac signal satisfy at least one narrow pulse criterion; and
determining a count of the one or more pulses within the respective sensed cardiac signal that satisfy the at least one narrow pulse criterion;
determining, for each of the plurality of sensing vectors, a respective vector selection metric based on at least the determined sensing vector metric and the determined morphology metric; and
selecting a sensing vector of the plurality of sensing vectors based on at least the determined vector selection metrics.
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