NCLEX-PN
NCLEX PN Exam Cram
1. A healthcare provider is caring for a patient who has experienced burns to the right lower extremity. According to the Rule of Nines, which of the following percentages most accurately describes the severity of the injury?
- A. 36%
- B. 27%
- C. 18%
- D. 9%
Correct answer: C
Rationale: According to the Rule of Nines, the right lower extremity accounts for 18% of the total body surface area. The Rule of Nines divides the body into regions, each representing 9% or a multiple of 9%, allowing for a quick estimation of the extent of burns. In this case, the correct answer is 18% as it corresponds to the percentage allocated for each lower extremity. Choices A, B, and D are incorrect as they do not match the standard allocation for the right lower extremity in the Rule of Nines.
2. Which sexually transmitted disease, sometimes referred to as the silent STD, is more common than gonorrhea and a leading cause of PID?
- A. Genital herpes.
- B. Trichomoniasis.
- C. Syphilis.
- D. Chlamydia.
Correct answer: D
Rationale: The correct answer is Chlamydia. Chlamydia is a common sexually transmitted infection that can often be asymptomatic, earning it the nickname 'silent STD.' It is more common than gonorrhea and is a leading cause of Pelvic Inflammatory Disease (PID). Genital herpes (Choice A) is a viral infection, not a bacterial STD like chlamydia. Trichomoniasis (Choice B) is a parasitic infection and not commonly associated with causing PID. Syphilis (Choice C) is a bacterial infection but is not as common as chlamydia and is not a leading cause of PID.
3. Which medication should the nurse withhold if the client's blood pressure is 88/50?
- A. Rosuvastatin (Crestor)
- B. Enalapril (Vasotec)
- C. Digoxin (Lanoxin)
- D. Clopidogrel (Plavix)
Correct answer: B
Rationale: Enalapril (Vasotec) is the correct answer. It is an angiotensin-converting enzyme (ACE) inhibitor that can further lower blood pressure. Given that the client's blood pressure is already low at 88/50, administering Enalapril could exacerbate hypotension and compromise perfusion to vital organs. Rosuvastatin (Crestor), Digoxin (Lanoxin), and Clopidogrel (Plavix) are not contraindicated in the context of low blood pressure and may be administered safely.
4. The nurse is caring for a client with hyperemesis gravidarum. What is the most likely electrolyte imbalance?
- A. Hypocalcemia
- B. Hypomagnesemia
- C. Hyponatremia
- D. Hypokalemia
Correct answer: D
Rationale: In hyperemesis gravidarum, where the client experiences severe nausea and vomiting, the most likely electrolyte imbalance is hypokalemia. Potassium is abundant in the stomach, and excessive vomiting leads to potassium loss. Hypocalcemia (Choice A) is not typically associated with hyperemesis gravidarum. Hypomagnesemia (Choice B) and Hyponatremia (Choice C) are less likely to occur compared to hypokalemia in this condition.
5. Levothyroxine (Synthroid) is the drug of choice for thyroid replacement therapy in clients with hypothyroidism because:
- A. it is chemically stable, nonallergenic, and can be administered orally once a day.
- B. it is available in a wide range of concentrations to meet individual client requirements.
- C. it is a prodrug of T3.
- D. it has a long half-life.
Correct answer: A
Rationale: Levothyroxine (Synthroid) is the preferred medication for hypothyroidism due to its chemical stability, nonallergenic properties, and convenient once-daily oral administration. It is safe and effective with minimal side effects when appropriately dosed. Choice B is incorrect because while Levothyroxine is available in various concentrations, it is not the reason it is the drug of choice; the primary reason is its stability and nonallergenic nature. Choice C is wrong as Levothyroxine (T4) is not a prodrug of T3; it is converted to T3 in the body. Option D is inaccurate because Levothyroxine has a long half-life (around 7 days), enabling once-daily dosing, as opposed to a short half-life.
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