The nurse is assisting in a seminar for newly licensed nurses, teaching about characteristics of the heart. The nurse shows understanding of the heart when she states that the innermost layer of the heart is called the.

chambers.

pericardium.

epicardium.

endocardium.

Answer and Explanation

The Correct Answer is D

Choice A rationale:
Chambers refer to the four compartments of the heart, not a layer of the heart.
Choice B rationale:
Pericardium is the sac that surrounds the heart, not a layer of the heart itself.
Choice C rationale:
Epicardium is the outermost layer of the heart, not the innermost.
Choice D rationale:
Endocardium is indeed the innermost layer of the heart, lining the inner surfaces of the heart chambers and valves.

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Correct Answer is D

Explanation

Choice A rationale:
Cardiac output is the amount of blood the heart pumps through the circulatory system in a minute. It is not the volume of blood ejected from the ventricles during each beat.
Choice B rationale:
The cardiac cycle refers to the sequence of events that occur when the heart beats. It is not the volume of blood ejected from the ventricles during each beat.
Choice C rationale:
Systole is the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries. It is not the volume of blood ejected from the ventricles during each beat.
Choice D rationale:
Stroke volume is the volume of blood ejected from the ventricles during each beat. This is the correct answer.

A. Keep the client NPO after midnight. B. Inspect the electrode pads. C. Instruct the client to breathe normally. D. Administer an analgesic prior to the procedure. E. Use alcohol to wipe the skin before placing the electrodes.

Correct Answer is ["B","C","E"]

Explanation

Choice A rationale:
Keeping the client NPO after midnight is not necessary for an ECG. It is a non-invasive procedure that does not require fasting.
Choice B rationale:
Inspecting the electrode pads is important to ensure good contact with the skin and accurate readings.
Choice C rationale:
Instructing the client to breathe normally during the ECG helps to prevent artifacts in the tracing that could lead to misinterpretation.
Choice D rationale:
Administering an analgesic prior to the procedure is not necessary. An ECG is a painless procedure.
Choice E rationale:
Using alcohol to wipe the skin before placing the electrodes can improve the quality of the ECG by reducing skin impedance.

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The nurse is assisting in a seminar for newly licensed nurses, teaching about characteristics of the heart. The nurse shows understanding of the heart when she states that the innermost layer of the heart is called the.

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Naxlex Comprehensive Predictor Exams

The nurse is taking care of a patient who is newly diagnosed with heart disease. The patient is asking questions about ejection fraction of the heart. The nurse responds. The nurse understands that the volume of blood ejected from the ventricles during each beat is called.

Correct Answer is D

Explanation

A nurse is planning to perform an electrocardiogram (ECG) for a client who has a history of coronary heart disease. Which of the following actions should the nurse take? (Select all that apply.).

Correct Answer is ["B","C","E"]

Explanation

What part of the ECG would you look for atrial depolarization?

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