A client is recovering from insertion of a pacemaker to pace the activity of the ventricles. At which point on the electrocardiogram tracing will the nurse assess pacer spikes?
1. Before the QRS complex
2. Before the P wave
3. After the QRS complex
4. After the P wave
1
If the ventricles are being paced, there will be a pacer spike just prior to the QRS complex. If the atria are being paced, there will be a pacer spike just before the P wave. Pacer spikes that occur after the QRS complex or P wave would indicate pacemaker malfunction and should be addressed immediately.
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