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 A

Explanation

A. "I will need to apply electrodes to your chest and extremities." This is a correct statement. The nurse needs to apply electrodes to the chest and extremities in order to obtain the ECG reading.

B. "You may feel a slight tingling while the test is being done." An ECG is a non-invasive test and does not cause any sensation such as tingling. This statement is inaccurate.

C. "The radioactivity from the dye lasts only a few hours." There is no dye or radioactivity involved in a standard ECG. This statement would apply to imaging studies like a nuclear stress test, not an ECG.

D. "The test will be complete in 30 to 60 minutes." A standard ECG takes only a few minutes to complete. This statement would be inaccurate for this type of procedure.

A. The stockings replace the need for postoperative leg exercises. B. The stockings prevent varicose veins. C. The stockings help to improve circulation and reduce risk for clots D. The stockings are used to reduce pain.

Correct Answer is C

Explanation

A. The stockings replace the need for postoperative leg exercises: Antiembolism stockings help reduce the risk of clots, but they do not replace the need for postoperative leg exercises, which help maintain circulation and prevent deep vein thrombosis (DVT).

B. The stockings prevent varicose veins: Antiembolism stockings are primarily used to prevent blood clots, such as DVT, not to treat or prevent varicose veins.

C. The stockings help to improve circulation and reduce the risk for clots: Antiembolism stockings are designed to promote venous return to the heart by applying graduated pressure to the legs, which helps improve circulation and reduce the risk of developing blood clots postoperatively.

D. The stockings are used to reduce pain: Antiembolism stockings are not intended to relieve pain. Their primary purpose is to prevent venous stasis and thromboembolism, especially in postoperative and immobile clients.

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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 A

Explanation

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Correct Answer is C

Explanation

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