To verify pacemaker function, which assessment indicates mechanical capture?

To verify pacemaker function, which assessment indicates mechanical capture?

• A. Evaluate the device's battery life
• B. Review the ECG rhythm for paced spikes
• C. Obtain a central apical pulse to confirm mechanical capture
• D. Check arterial blood gas

Answer: (D)

Mechanical capture means the heart actually contracts in response to the pacemaker’s electrical impulse. To verify this, you look for a palpable pulse and perfusion indicators, such as a central apical pulse, which shows the heart is beating in response to pacing. While checking the ECG for paced spikes confirms that the device is delivering impulses (electrical capture), it doesn’t prove a mechanical response. Arterial blood gas measures oxygenation and acid-base status, not whether the pacemaker is producing a heartbeat. Evaluating battery life or the electrical tracing helps assess device function, but the key for mechanical capture is confirming a palpable apical pulse.

Mechanical capture means the heart actually contracts in response to the pacemaker’s electrical impulse. To verify this, you look for a palpable pulse and perfusion indicators, such as a central apical pulse, which shows the heart is beating in response to pacing. While checking the ECG for paced spikes confirms that the device is delivering impulses (electrical capture), it doesn’t prove a mechanical response. Arterial blood gas measures oxygenation and acid-base status, not whether the pacemaker is producing a heartbeat. Evaluating battery life or the electrical tracing helps assess device function, but the key for mechanical capture is confirming a palpable apical pulse.