A nurse is assessing the therapeutic International Normalized Ratio (INR) range for a patient receiving Warfarin. Which INR range below is therapeutic?

2.0-3.0

4.0-5.0

1.0-2.0

3.0-4.9

Answer and Explanation

The Correct Answer is A

Choice A reason : The therapeutic INR range for a patient on Warfarin, especially for conditions such as atrial fibrillation, venous thromboembolism, and for the prevention of thrombosis in patients with prosthetic heart valves, is typically 2.0-3.0. This range balances the risk of clotting with the risk of bleeding. An INR of 2.0-3.0 means that the blood is taking twice to three times as long as normal blood to clot, which is the desired effect of the medication in preventing harmful clots.

Choice B reason : An INR range of 4.0-5.0 is generally considered too high for most therapeutic purposes and increases the risk of bleeding complications. This range might be appropriate in very specific clinical situations, such as for patients with mechanical heart valves who may require a slightly higher INR, but it is not the standard therapeutic range.

Choice C reason : An INR range of 1.0-2.0 is below the therapeutic range for patients on Warfarin. This range would not provide sufficient anticoagulation and would leave the patient at risk for thrombotic events.

Choice D reason : An INR range of 3.0-4.9 is higher than the standard therapeutic range and could lead to an increased risk of bleeding. While some patients with mechanical heart valves in the mitral position may require an INR up to 3.5, an INR higher than this is usually not necessary and could be dangerous.

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Correct Answer is C

Explanation

Choice A reason : Advising a client with PVD not to go barefoot is correct. Going barefoot can increase the risk of injury to the feet, which can be particularly dangerous in individuals with PVD due to poor circulation. Any injuries to the feet may heal poorly and can lead to complications such as ulcers or infections.

Choice B reason : Using a thermometer to check the temperature of bath water is a recommended practice for clients with PVD. Due to potential nerve damage and reduced sensation in the extremities, clients may not accurately gauge water temperature, leading to burns. Therefore, using a thermometer helps prevent thermal injury.

Choice C reason : Wearing stockings with elastic tops is not recommended for clients with PVD. Elastic tops can constrict blood flow in the legs, exacerbating circulation problems. Instead, clients should wear non-constricting, well-fitting socks or stockings that promote blood flow.

Choice D reason : Avoiding crossing legs at the knees is good advice for clients with PVD. Crossing the legs can restrict blood flow to the lower extremities, which is already compromised in PVD. Keeping the legs uncrossed and elevating them when possible can help improve circulation.

A. Thickened toenails B. Shiny, thin skin on the lower extremities C. Dusky, red color of the feet when dangling D. Pitting edema

Correct Answer is D

Explanation

Choice A reason : Thickened toenails are often associated with fungal infections and are not a direct symptom of venous insufficiency. However, they can appear in patients with chronic venous insufficiency due to poor circulation that affects the health of the toenails.

Choice B reason : Shiny, thin skin on the lower extremities is more characteristic of arterial insufficiency, where there is a reduction in blood flow and oxygen to the tissues. In venous insufficiency, the skin may instead appear thickened and discolored due to stasis and buildup of hemosiderin from the breakdown of red blood cells.

Choice C reason : A dusky, red color of the feet when dangling can be a sign of dependent rubor, which is associated with arterial insufficiency. This occurs when there is a severe decrease in arterial blood flow to the lower extremities. Venous insufficiency may cause a different color change, typically a brownish discoloration due to hemosiderin deposition.

Choice D reason : Pitting edema is a hallmark sign of venous insufficiency. It occurs due to the accumulation of fluid in the tissues, which is a result of increased pressure in the veins. This pressure causes fluid to leak into the surrounding tissues, leading to swelling that retains an indentation when pressed.

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A nurse is assessing the therapeutic International Normalized Ratio (INR) range for a patient receiving Warfarin. Which INR range below is therapeutic?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is D

Explanation

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