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Muscle Noise Effects on Atrial Evoked Response Sensing: Implications on Atrial Auto‐Threshold and Auto‐Capture Determination

Background: Automatic pacing capture verification algorithms that are based on detection of local evoked response signals are susceptible to interference from myopotential noise. This is especially true in the atrium where the lower signal amplitude and signal‐to‐noise ratio make pacing capture verification more challenging. The aim of this study is to evaluate the impact of myopotential noise induced by various maneuvers on the atrial evoked response (AER) signal.