a patient with atrial fibrillation is prescribed warfarin which laboratory test should the nurse monitor to assess the effectiveness of the medication
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1. A patient with atrial fibrillation is prescribed warfarin. Which laboratory test should the nurse monitor to assess the effectiveness of the medication?

Correct answer: B

Rationale: The correct answer is B: Prothrombin time (PT)/INR. Warfarin affects the clotting ability of the blood by inhibiting vitamin K-dependent clotting factors. Monitoring the prothrombin time (PT) and international normalized ratio (INR) is crucial to assess the effectiveness and safety of warfarin therapy. These tests help determine if the patient is within the desired anticoagulation range to prevent either clotting issues or excessive bleeding.

2. A client with a new diagnosis of myasthenia gravis is prescribed pyridostigmine (Mestinon). Which instruction should the nurse include in the client's teaching?

Correct answer: B

Rationale: The correct instruction for a client with myasthenia gravis prescribed pyridostigmine (Mestinon) is to take the medication 30 minutes before meals. This timing is crucial as it helps improve muscle strength for eating and swallowing. By taking the medication before meals, the client can experience enhanced muscle function during mealtime, which is especially important for managing the symptoms of myasthenia gravis. Choices A, C, and D are incorrect. Taking the medication with food may decrease its effectiveness, avoiding dairy products is not necessary, and taking the medication at bedtime does not coincide with the optimal timing for enhancing muscle function during meals.

3. A patient with tuberculosis is started on rifampin. What advice should the nurse provide?

Correct answer: B

Rationale: The correct advice for a patient starting rifampin is to expect orange-red discoloration of body fluids. Rifampin can cause harmless orange-red discoloration of body fluids, which may include urine, sweat, saliva, and tears. It is important for the patient to be aware of this side effect as it can stain clothing and contact lenses. Limiting the intake of green leafy vegetables is not necessary with rifampin. Avoiding exposure to sunlight is more commonly associated with other medications like tetracyclines, not rifampin. Taking rifampin with antacids is not recommended as antacids can reduce the absorption of rifampin, decreasing its effectiveness in treating tuberculosis.

4. The nurse is caring for a client with hyperthyroidism. Which intervention should the nurse implement to manage the client's condition?

Correct answer: B

Rationale: Encouraging frequent rest periods is essential in managing hyperthyroidism as it helps address the fatigue and hypermetabolic state commonly associated with this condition. Rest is crucial to support the body's recovery and reduce the stress on the thyroid gland. While nutrition is important in managing hyperthyroidism, providing a high-calorie diet is not the priority intervention. Restricting fluid intake is not typically necessary unless there are specific indications such as heart failure. Administering a stool softener is not directly related to managing hyperthyroidism.

5. The charge nurse observes that a client with a nasogastric tube on low intermittent suction is drinking a glass of water immediately after the unlicensed assistive personnel (UAP) left the room. What action should the nurse take?

Correct answer: A

Rationale: The correct action for the charge nurse to take is to remove the glass of water and speak to the UAP. This ensures immediate correction and education to prevent further issues with the nasogastric tube. Addressing the situation promptly can prevent harm to the client and reinforces the importance of following proper protocols.

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