A nurse is caring for a patient who has been prescribed enoxaparin (Lovenox) subcutaneously for prophylaxis against deep vein thrombosis (DVT). The nurse should instruct the patient to:

Avoid foods that are high in vitamin K.

Administer injections into areas with decreased subcutaneous tissue.

Massage injection sites after administration.

Use a soft-bristled toothbrush.

Answer and Explanation

The Correct Answer is D

The correct answer is choice D) Use a soft-bristled toothbrush.

This is because enoxaparin (Lovenox) is an anticoagulant that prevents blood clots by thinning the blood. Therefore, patients who take enoxaparin should avoid activities that can cause bleeding, such as using a hard-bristled toothbrush, flossing, shaving, or cutting their nails.

Choice A) Avoid foods that are high in vitamin K is wrong because vitamin K interacts with warfarin, another anticoagulant, but not with enoxaparin. Vitamin K helps the blood clot, so patients who take warfarin should avoid foods that are high in vitamin K, such as leafy green vegetables, broccoli, or liver.

Choice B) Administer injections into areas with decreased subcutaneous tissue is wrong because enoxaparin should be injected into areas with adequate subcutaneous tissue, such as the abdomen or the thighs. Injecting into areas with decreased subcutaneous tissue can cause bruising, pain, or hematoma formation.

Choice C) Massage injection sites after administration is wrong because massaging the injection sites can cause bleeding, bruising, or irritation. Patients who take enoxaparin should not rub or press on the injection sites after administration.

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Correct Answer is C

Explanation

Warfarin is an anticoagulant that inhibits the synthesis of vitamin K-dependent clotting factors. The INR is a standardized measure of the prothrombin time (PT), which reflects the degree of anticoagulation.The therapeutic range for INR is 2 to 3 for most conditions, and higher for some mechanical heart valves.

Choice A) Activated partial thromboplastin time (aPTT) is wrong because it is used to monitor heparin therapy, not warfarin therapy.

Heparin is another anticoagulant that works by activating antithrombin III, which inhibits thrombin and factor Xa.The therapeutic range for aPTT is 1.5 to 2.5 times the normal value, which is 30 to 40 seconds.

Choice B) Prothrombin time (PT) is wrong because it is not a standardized measure of the warfarin effect.

The PT can vary depending on the reagents and methods used by different laboratories.The INR was developed to eliminate this variability and provide a consistent measure of the warfarin effect.

Choice D) Platelet count is wrong because it is not affected by warfarin therapy.

Warfarin does not affect the number or function of platelets, only the clotting factors.Platelet count can be used to monitor other conditions that affect hemostasis, such as thrombocytopenia or thrombocytosis.

A. Omeprazole B. Ranitidine C. Sucralfate D. Misoprostol.

Correct Answer is A

Explanation

Omeprazole is a proton pump inhibitor (PPI) that reduces the production of stomach acid.

Dabigatran is an anticoagulant that prevents blood clots from forming.

Both drugs can increase the risk of bleeding in the gastrointestinal tract, especially in clients with peptic ulcer disease.Therefore, they should not be used together unless absolutely necessary.

Choice B. Ranitidine is wrong because ranitidine is a histamine-2 receptor antagonist (H2RA) that also reduces the production of stomach acid, but to a lesser extent than PPIs.Ranitidine does not interact significantly with dabigatran and does not increase the risk of bleeding.

Choice C. Sucralfate is wrong because sucralfate is a mucosal protectant that forms a barrier over ulcers and protects them from acid and enzymes.Sucralfate does not affect the coagulation system and does not increase the risk of bleeding.

Choice D. Misoprostol is wrong because misoprostol is a synthetic prostaglandin that inhibits gastric acid secretion and increases bicarbonate and mucus production.

Misoprostol is used to prevent ulcers in clients who take NSAIDs, which can cause ulcers and bleeding.

Misoprostol does not interact with dabigatran and does not increase the risk of bleeding.

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A nurse is caring for a patient who has been prescribed enoxaparin (Lovenox) subcutaneously for prophylaxis against deep vein thrombosis (DVT). The nurse should instruct the patient to:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is A

Explanation

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