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The nurse is reviewing the patient's medication orders and finds an order stating amoxicillin 250 mg every 8 hours. What would the nurse question regarding this order?
- A. Dose
- B. Route
- C. Frequency of administration
- D. Allowance for generic substitution
Correct Answer: B
Rationale: The order lacks the route (e.g., oral, IV), which is essential for safe administration.
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The mean weight of 500 college students is 70 kg and the standard deviation is 3 kg. Assuming that the weight is normally distributed, determine how many students weigh between 60 kg and 75 kg.
- A. 450
- B. 476
- C. 480
- D. 490
Correct Answer: B
Rationale: Convert to z-scores: (60-70)/3 = -3.33, (75-70)/3 = 1.67. P(-3.33 < Z ≤ 1.67) = P(Z ≤ 1.67) - P(Z ≤ -3.33) = 0.9525 - (1 - 0.9996) = 0.9521. Then, 0.9521 * 500 ≈ 476, as per the document.
Which of the following statements about aminoglycosides is false?
- A. They have short half-lives
- B. They are bactericidal
- C. They exacerbate weakness in myasthenia gravis patients
- D. None of the Above
Correct Answer: D
Rationale: All statements are true: aminoglycosides have short half-lives (2-3 hours), are bactericidal, and can worsen myasthenia gravis by neuromuscular blockade.
Which of the following antibiotics is contraindicated in patients with myasthenia gravis?
- A. Vancomycin
- B. Gentamicin
- C. Daptomycin
- D. Cephalexin
Correct Answer: B
Rationale: Gentamicin, an aminoglycoside, worsens neuromuscular blockade in myasthenia gravis, making it contraindicated.
Varicella vaccine is recommended to be given to patients who are:
- A. HIV positive with a CD4+ T-lymphocyte percentage less than 15%
- B. Taking corticosteroids (up to 2 mg/kg/day or less than 20 mg/day)
- C. Pregnant
- D. Immunocompromised
Correct Answer: B
Rationale: Varicella vaccine is safe with low-dose steroids; HIV with low CD4 , pregnancy , or immunocompromise contraindicate it.
A nurse is teaching the parents of a school-age child about transdermal Methylphenidate. Which of the following instructions should the nurse include?
- A. Apply one patch twice per day.
- B. Leave the patch on for 9 hr.
- C. Apply the patch to the child's waist.
- D. Use opened tray within 6 months.
Correct Answer: B
Rationale: Methylphenidate patches are worn for 9 hours to control ADHD symptoms during the day.