| 摘要 |
An implantable pacemaker automatically verifies atrial capture and performs atrial stimulation energy assessment when atrial capture is absent. The pacemaker delivers a stimulation pulse in the atrial chamber of the heart and samples the resulting far-field signal from the ventricular chamber during a predetermined far-field interval window. The pacemaker then compares the far-field signal sample to a predetermined far-field signal recognition template. If the far-field signal sample is approximately equal to the far-field signal recognition template, then atrial capture is deemed verified; otherwise, the pacemaker performs an atrial stimulation energy determination. Optionally, the pacemaker automatically determines the timing of the far-field interval window and defines the far-field signal recognition template.
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