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 B
Explanation
A. "I’ll be sure to eat foods with lots of vitamin K." This statement shows misunderstanding, as vitamin K counteracts the effects of warfarin. The client should maintain a consistent intake of vitamin K, not increase it.
B. "I’ll use my electric razor for shaving." Using an electric razor reduces the risk of cuts, which could lead to bleeding, a common concern for clients on warfarin.
C. "It's okay to have a few glasses of wine every day." Alcohol can interfere with the metabolism of warfarin and increase the risk of bleeding. This is not a safe practice.
D. "I'll take aspirin for my headaches." Aspirin is an anticoagulant and can increase the risk of bleeding when taken with warfarin, so this statement indicates a lack of understanding.
Correct Answer is C
Explanation
A. Anemia: Anemia is not a common adverse effect associated with atenolol. Atenolol primarily affects the cardiovascular system by lowering heart rate and blood pressure.
B. Neutropenia: Neutropenia, is not typically associated with atenolol.
C. Bradycardia: Bradycardia is a common adverse effect of beta-blockers like atenolol, as they work by slowing down the heart rate and reducing myocardial oxygen demand.
D. Hypokalemia: Atenolol is not known to cause hypokalemia. Diuretics are more commonly associated with this electrolyte imbalance.
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