A client has undergone coronary artery bypass surgery and has epicardial pacing wires in place. The nurse observes the presence of a pacing spike but no QRS complex on the client's ECG tracing. What is the nurse's interpretation of this event?
A. Loss of capture
B. Ventricular fibrillation
C. Capture from ectopic focus
D. Normal tracing with epicardial pacing
A
In epicardial pacing, the wires are threaded onto the epicardial surface of the heart, and exit through the chest wall. If pacing spikes are seen without QRS complexes following, this implies loss of capture.
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