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

Answer and Explanation

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.

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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.

A. Bounding B. Slow C. Irregular D. Not palpable

Correct Answer is C

Explanation

A. Bounding: A bounding pulse indicates strong and forceful heartbeats, which is not typically associated with atrial fibrillation.

B. Slow: Atrial fibrillation is usually associated with an irregular and often rapid heart rate, not a slow heart rate.

C. Irregular: Atrial fibrillation is characterized by an irregularly irregular pulse due to the uncoordinated electrical activity in the atria, leading to an inconsistent pulse rate.

D. Not palpable: A pulse would not be expected to be "not palpable" in atrial fibrillation unless there is a severe circulatory issue, which is not the typical presentation.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is B

Explanation

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Correct Answer is C

Explanation

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