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In an Electrocardiogram EKG tracing the P wave represents?

Ventricular Repolarization

Left arterial pressure

Ventricular Depolarization

Atrial Depolarization

Answer and Explanation

The Correct Answer is D

A. Ventricular repolarization is represented by the T wave on an EKG.

B. Left arterial pressure is not represented by any specific EKG waveform.

C. Ventricular depolarization is represented by the QRS complex on an EKG.

D. The P wave represents atrial depolarization, which is the electrical activity that initiates atrial contraction.

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Correct Answer is D

Explanation

A. Thigh muscles: While thigh muscles assist in venous return, they are not as critical as the calf muscles in moving blood from the feet.

B. Arterial pulsations: Arterial pulsations help in the forward movement of blood in the arteries but do not directly assist with venous return from the feet.

C. Venous flow: Venous flow is the general term for blood movement in veins, but it does not specify the mechanism responsible for moving blood from the feet.

D. Calf muscles: The calf muscles, through their contraction (often referred to as the "muscle pump"), are crucial in helping to push blood upwards from the feet towards the inferior vena cava. This mechanism is essential for effective venous return.

A. Pitting edema B. Capillary refill C. Skin temperature D. Peripheral pulses

Correct Answer is A

Explanation

A. Pitting edema: Pressing on the skin and observing how it rebounds (if it leaves an indentation) is used to assess for pitting edema, which indicates fluid retention in the tissues.

B. Capillary refill: This test involves pressing on the nail beds and observing the time it takes for color to return, not pressing on the arm.

C. Skin temperature: This is assessed by palpating the skin, not by pressing with the thumb.

D. Peripheral pulses: This involves palpating pulse points to assess their presence and strength, not pressing on the arm to check for edema.

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In an Electrocardiogram EKG tracing the P wave represents?

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Naxlex Comprehensive Predictor Exams

What is responsible to move the blood supply from the feet toward the inferior vena cava?

Correct Answer is D

Explanation

While performing an assessment, the nurse presses the client's arm with the tip of her thumb, holds for a few seconds, and releases. The nurse observes the client as shown. What is the nurse assessing?

Correct Answer is A

Explanation

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