which lab value is critical for monitoring warfarin therapy

ATI RN

ATI RN Comprehensive Exit Exam

1. Which lab value is critical for monitoring warfarin therapy?

A. Monitor INR
B. Monitor platelet count
C. Monitor sodium levels
D. Monitor calcium levels

Correct answer: A

Rationale: The correct answer is A: Monitor INR. INR (International Normalized Ratio) is crucial for monitoring warfarin therapy as it helps assess the therapeutic effectiveness and bleeding risks associated with the medication. INR measures the clotting tendency of blood, which is essential in determining the appropriate dosage of warfarin. Monitoring platelet count (B), sodium levels (C), or calcium levels (D) is not primarily used for assessing warfarin therapy. Platelet count is more relevant in assessing bleeding disorders, while sodium and calcium levels are typically monitored for different medical conditions unrelated to warfarin therapy.

2. A client with osteoporosis is being taught about dietary management. Which of the following foods should be recommended?

A. Almonds
B. Spinach
C. Yogurt
D. Carrots

Correct answer: C

Rationale: Yogurt is a calcium-rich food that helps strengthen bones and should be recommended to clients with osteoporosis. Almonds, spinach, and carrots do not provide as much calcium as yogurt and are not as beneficial for individuals with osteoporosis.

3. A nurse is caring for a client who has a prescription for spironolactone. Which of the following foods should the nurse recommend?

A. Chicken breast
B. Pasta
C. Spinach
D. Yogurt

Correct answer: A

Rationale: Correct Answer: Chicken breast. Spironolactone is a potassium-sparing diuretic, meaning it helps the body retain potassium. Foods high in potassium, like spinach and yogurt, should be avoided when taking spironolactone to prevent hyperkalemia. Chicken breast, being a low-potassium protein source, is a suitable recommendation for clients on spironolactone therapy.

4. A client has a new prescription for nitroglycerin sublingual tablets. Which of the following instructions should the nurse include?

A. Take the medication with a full glass of water.
B. Take the medication with food to prevent stomach upset.
C. Take one tablet every 5 minutes, up to three doses, for chest pain.
D. Swallow the tablet whole for the best effect.

Correct answer: C

Rationale: The correct instruction for a client with a new prescription for nitroglycerin sublingual tablets is to take one tablet every 5 minutes, up to three doses, for chest pain. This dosing regimen helps relieve chest pain associated with angina by promoting vasodilation. Option A is incorrect as nitroglycerin sublingual tablets should be placed under the tongue, not swallowed with water. Option B is incorrect because taking nitroglycerin with food may decrease its effectiveness. Option D is incorrect because nitroglycerin sublingual tablets are meant to be dissolved under the tongue, not swallowed whole.

5. Which medication is commonly prescribed for a patient with hypertension?

A. Lisinopril
B. Metformin
C. Atorvastatin
D. Aspirin

Correct answer: A

Rationale: The correct answer is Lisinopril. Lisinopril is an ACE inhibitor commonly prescribed to patients with hypertension to manage their blood pressure. Metformin is used to treat type 2 diabetes, not hypertension (choice B). Atorvastatin is a statin used to lower cholesterol levels, not primarily prescribed for hypertension (choice C). Aspirin is used for its antiplatelet effects and in preventing cardiovascular events, but it is not a first-line treatment for hypertension (choice D). Therefore, Lisinopril is the most suitable choice for a patient with hypertension.