A nurse is reinforcing teaching with a newly licensed nurse about reading a client's ECG tracing. The nurse should include in the teaching that the P wave represents which of the following cardiac electrical activities?
Late ventricular repolarization
Ventricular depolarization
Early ventricular repolarization
Atrial depolarization
The Correct Answer is D
A. Late ventricular repolarization: Late ventricular repolarization is represented by the T wave on an ECG, not the P wave.
B. Ventricular depolarization: Ventricular depolarization is represented by the QRS complex, not the P wave.
C. Early ventricular repolarization: Early ventricular repolarization is not related to the P wave. It is part of the T wave, which represents repolarization of the ventricles.
D. Atrial depolarization: The P wave represents atrial depolarization, which is the electrical activity that triggers the contraction of the atria.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1720"]
Explanation
- IV solution: 1,000 mL
- The client received 1,000 mL of IV fluids.
- 6 oz of coffee: 180 mL
- 1 oz = 30 mL, so 6 oz × 30 = 180 mL.
- 6 oz of water: 180 mL
- 6 oz × 30 = 180 mL.
- 180-mL bowl of soup: 180 mL
- Soup is already measured in mL, so this remains 180 mL.
- 3 oz of flavored gelatin: 90 mL
- 3 oz × 30 = 90 mL.
- 3 oz of ice cream: 90 mL
- 3 oz × 30 = 90 mL.
Total intake: 1,000 + 180 + 180 + 180 + 90 + 90 = 1,720 mL
The total intake from all sources over the 8-hour shift is 1,720 mL.
Correct Answer is D
Explanation
A. Late ventricular repolarization: Late ventricular repolarization is represented by the T wave on an ECG, not the P wave.
B. Ventricular depolarization: Ventricular depolarization is represented by the QRS complex, not the P wave.
C. Early ventricular repolarization: Early ventricular repolarization is not related to the P wave. It is part of the T wave, which represents repolarization of the ventricles.
D. Atrial depolarization: The P wave represents atrial depolarization, which is the electrical activity that triggers the contraction of the atria.
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