Patent Document ID: 20140275917
Application ID: 14204478
Patent Flag: 0

Claim One:
1. A method of sensing vector selection in an implantable cardiac device, the implantable cardiac device including electrodes configured for sensing electrical signals while implanted coupled to operational circuitry configured for analyzing signals captured from the sensing electrodes, wherein the operational circuitry and electrodes are configured to define at least two sensing vectors for sensing cardiac signals, the method comprising: for a first sensing vector, the operational circuitry establishing each of: an estimate of signal-to-noise ratio; an estimate of cardiac signal amplitude; and a measure of biphasic or monophasic nature of sensed signals; and the operational circuitry combining the signal to noise ratio, cardiac signal amplitude and measure of biphasic or monophasic nature of sensed signals to generate a sensing quality metric for the first sensing vector.