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The nurse explains that range of motion exercises are necessary so that movement improves venous circulation by:

maintaining strength in muscles.

compression of muscles on venous walls.

vasodilation.

increased metabolism.

Answer and Explanation

The Correct Answer is B

A. maintaining strength in muscles.

This is a benefit of ROM exercises, but it does not directly explain how venous return improves.

B. compression of muscles on venous walls.

Muscle contraction compresses veins, helping to push blood back toward the heart, improving venous return.

C. vasodilation.

Vasodilation increases blood flow, but doesn’t directly enhance venous return in the context of ROM.

D. increased metabolism.

Increased metabolism is a systemic benefit of exercise but is not the primary mechanism of improved venous circulation.

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Correct Answer is C

Explanation

A. Raise the head of the bed to 30 to 45 degrees.

While head elevation for comfort is acceptable, it is not the primary responsibility for CPM care.

B. Elevate the machine at the foot of the bed on one pillow.

The CPM machine should lie flat along the bed frame. Elevation on a pillow can cause misalignment or malfunction.

C. Set the proper flexion and extension limits.

The nurse must confirm that the machine is set according to the provider's orders for proper range of motion and to prevent injury.

D. Keep the operated knee warm.

While comfort is important, this is not a priority of CPM machine care and doesn't directly relate to its function.

A. allows for large traction weights to reduce the fracture. B. reduces muscle spasm that accompanies fractures. C. helps the bone heal slowly. D. does not cause skin disruptions.

Correct Answer is B

Explanation

A. Allows for large traction weights to reduce the fracture.

Buck's traction uses light weights (5–10 lbs) and is not used for fracture reduction, but rather to relieve symptoms.

B. Reduces muscle spasm that accompanies fractures.

Buck's traction is commonly used preoperatively to reduce muscle spasm, pain, and to align the limb temporarily.

C. Helps the bone heal slowly.

It does not influence the speed of bone healing directly. Its purpose is mainly for temporary stabilization and symptom relief.

D. Does not cause skin disruptions.

While it's less invasive than skeletal traction, skin breakdown is still a risk, especially in older adults with fragile skin.

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The nurse explains that range of motion exercises are necessary so that movement improves venous circulation by:

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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