| 摘要 |
A cardiac rhythm management device having a capture verification sensing circuit for use in either a normal beat to beat pacing mode or an autothreshold mode. The cardiac rhythm management device is coupled to one or more pacing leads having pacing/sensing electrodes coupled thereto, and includes a sensing circuit for sensing electrical activity of the patient's heart, wherein the sensing circuit includes a dedicated evoked response sense amplifier and at least one high pass coupling capacitor electrically connected as a portion of a high pass network and between a pacing/sensing electrode and a blanking switch. A plurality of high pass coupling capacitors are coupled in parallel each having a separate blanking switch, thereby creating a differential network to offset imbalance sensed from the electrode due to extraneous factors.
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