The nurse is caring for a patient 1 hour postoperative pacemaker implantation. Upon assessing the patient's ECG, spikes appear within the QRS complex and ST segment. This is described as:
A) Failure to sense
B) Failure to capture
C) Pacemaker failure
D) Demand pacing
Ans: A
Feedback: Failure to sense is when the pacemaker is unable to detect an electrically conducted signal produced by the heart such as a P wave or QRS complex. It is seen as spikes on the QRS complex and ST segment. Failure to capture is no response of the ventricle of the heart to the electrical conducting system.
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