The nurse is observing the client's rhythm strip on the cardiorespiratory monitor when suddenly the P wave disappears. The nurse interprets this to mean:

1. The ventricle is no longer contracting.
2. Only the left ventricle is contracting.
3. The atria are not contracting.
4. The client's heart is no longer ejecting blood.


3
Rationale: The P wave is an indication of atrial contraction, and absence of this wave would mean that either the atria are not contracting or they are fibrillating, and the fibrillation wave is so small as to not be seen on that particular lead. The QRS reflects ventricular contraction.

Nursing

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