A pediatric patient weighing 22 kg is prescribed amoxicillin 50 mg/kg/day in divided doses every 8 hours. The medication is available as a suspension containing 125 mg/5 mL. How many mL of the suspension should the nurse administer for each dose?
11.67 mL
14.67 mL
15.67 mL
17.67 mL
The Correct Answer is B
Calculate the total daily dose in milligrams (mg).
Total daily dose (mg) = Prescribed dose (mg/kg/day) × Weight (kg)
= 50 mg/kg/day × 22 kg
= 1100 mg/day.
Determine the number of doses per day:
Doses are given every 8 hours, so Number of doses per day = 24 hours / 8 hours
= 3 doses/day.
Calculate the dose per administration in milligrams (mg).
Dose per administration (mg) = Total daily dose (mg) / Number of doses per day
= 1100 mg / 3 doses
= 366.666 mg.
Available concentration of the amoxicillin suspension:
= 125 mg / 5 mL.
Calculate the volume in milliliters (mL) to administer for each dose.
Volume per dose (mL) = Desired dose per administration (mg) / (Available concentration (mg) / Available volume (mL))
Volume per dose (mL) = 366.666 mg / (125 mg / 5 mL)
= 366.666 mg × (5 mL / 125 mg)
= (366.666 × 5) / 125 mL
= 1833.33 / 125 mL
= 14.666 mL.
=14. 67 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. 12 months: By 12 months, an infant’s weight typically triples, not just doubles, reflecting rapid growth in the first year.
B. 9 months: While growth rates vary, doubling birth weight by 9 months is slightly later than the average developmental milestone.
C. 3 months: At 3 months, most infants have gained weight but have not yet doubled their birth weight.
D. 6 months: Infants generally double their birth weight by around 5 to 6 months of age, which is a key indicator of healthy growth and nutrition.
Correct Answer is D
Explanation
A. Preoperational: During the preoperational stage (ages 2 to 7), children develop symbolic thinking and engage in imaginative play, but object permanence has already been established before this stage begins.
B. Concrete operational: This stage (ages 7 to 11) involves logical thinking about concrete events and understanding concepts like conservation, but object permanence develops much earlier in infancy.
C. Formal operational: The formal operational stage (ages 11 and up) is marked by abstract reasoning and hypothetical thinking. Object permanence is fully developed long before this stage.
D. Sensorimotor: Object permanence begins to emerge during the sensorimotor stage (birth to 2 years), as infants learn that objects continue to exist even when they are not visible—typically around 8 to 12 months of age.
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