what is the therapeutic range for carbamazepine tegretol
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Nursing Elites

NCLEX-PN

Best NCLEX Next Gen Prep

1. What is the therapeutic range for carbamazepine (Tegretol)?

Correct answer: B

Rationale: The therapeutic range for carbamazepine (Tegretol) is 4-10 mcg/mL. This range is established based on the optimal balance between effectiveness and safety. Choices A, C, and D are outside the therapeutic range for carbamazepine, which could lead to suboptimal treatment outcomes or increased risk of toxicity. Choice B (4-10 mcg/mL) is the correct range recommended for therapeutic efficacy while minimizing adverse effects.

2. You are caring for a 78-year-old woman who is wondering why she was diagnosed with glaucoma. Although she has several risk factors, which of these is not one of them?

Correct answer: D

Rationale: Age over 60 and Mexican-American heritage are recognized as risk factors for glaucoma. Elevated blood pressure is also a risk factor due to its potential to cause optic nerve damage. While 20/80 vision indicates poor eyesight, it is not a direct causal factor for glaucoma. Glaucoma is mainly associated with factors like age, ethnicity, and certain medical conditions, rather than a specific visual acuity measurement. Therefore, 20/80 vision is not a risk factor for glaucoma, making it the correct answer. The other choices, such as age, Mexican-American heritage, and elevated blood pressure, are established risk factors for developing glaucoma, as they are associated with an increased likelihood of the condition.

3. The physician orders the antibiotics ampicillin (Omnipen) and gentamicin (Garamycin) for a newly admitted client with an infection. The nurse should:

Correct answer: B

Rationale: The correct answer is to give the medications sequentially and flush well between them. Ampicillin has a pH of 8-10, while gentamicin has a pH of 3-5.5, making them incompatible when given together. Flushing well between drugs is necessary to prevent any potential interactions. Option A is incorrect because administering both medications simultaneously can lead to incompatibility issues. Option C is incorrect because the nurse should already be aware of the correct administration sequence and not need to consult the physician or pharmacy each time. Option D is incorrect because delaying the second medication by several hours can slow down the treatment of the client's infection, which is not ideal in this scenario.

4. What is the most appropriate intervention for a client with suspected genitourinary trauma and visible blood at the urethral meatus?

Correct answer: D

Rationale: A urologist consult is the most appropriate intervention for a client with visible blood at the urethral meatus and suspected genitourinary trauma. This specialist can evaluate the extent of the trauma and provide the necessary treatment. Foley catheter insertion (Choice A) and in-and-out catheter specimen for urinalysis (Choice B) are contraindicated in the presence of genitourinary trauma as they can worsen the injury. While a voided urine specimen for urinalysis (Choice C) may be ordered by the physician, it does not address the specific management needed for genitourinary trauma. Therefore, a urologist consult is the best option in this scenario.

5. A nurse preparing to assist with data collection of the abdomen asks the client to void and then assists the client into a supine position. Which primary finding does the nurse expect to note on percussing all four quadrants of the abdominal cavity?

Correct answer: B

Rationale: The nurse expects to primarily note tympany when percussing the abdomen. Tympany should predominate because air in the intestines rises to the surface when the client is in a supine position. Dullness is usually heard over a distended bladder, adipose tissue, fluid, or a mass. Borborygmus, which refers to hyperperistalsis, is typically heard on auscultation, not percussion. Hyperresonance is present with gaseous distention, not the typical finding when percussing all four quadrants of the abdomen.

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