A child who weighs 16 pounds receives a prescription for amoxicillin 25 mg/kg/day by mouth in divided doses every 12 hours.
The bottle is labeled, "Amoxicillin for Oral Suspension, USP 200 mg per 5 mL.”. How many mL should the nurse administer with each dose? (Enter numerical value only.
If rounding is required, round to the nearest tenth.)
The Correct Answer is ["2.3"]
Step 1 is to convert the child's weight from pounds to kilograms. 16 pounds ÷ 2.2 = 7.3 kg.
Step 2 is to calculate the total daily dose in mg. 25 mg/kg × 7.3 kg = 182.5 mg.
Step 3 is to determine the dose per administration, divided by 2 since the dose is given every 12 hours. 182.5 mg ÷ 2 = 91.25 mg.
Step 4 is to convert the dose from mg to mL using the concentration of the medication. 91.25 mg ÷ (200 mg/5 mL) = 91.25 ÷ 40 = 2.3 mL per dose. The answer is 2.3 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Rooting is a reflex that helps a baby find and latch onto the breast or bottle for feeding. While the rooting reflex may diminish as the baby grows, it is not the primary indicator for introducing solid foods. Other developmental milestones are more relevant for this transition.
Choice B rationale
When a baby starts opening their mouth in response to the sight or smell of food, it indicates a readiness to try solid foods. This behavior shows that the baby is interested in and capable of learning to eat from a spoon, which is a key step in the introduction of solids.
Choice C rationale
Awakening once for nighttime feedings is common for infants and does not necessarily indicate readiness for solid foods. Nighttime awakenings can occur for various reasons, including hunger, but other developmental signs should be considered for introducing solids.
Choice D rationale
Giving up a bottle for a cup is a milestone that typically occurs later in infancy or toddlerhood. It is not directly related to the introduction of solid foods, which generally begins around 4 to 6 months of age based on the child's developmental readiness and interest in food.
Correct Answer is B
Explanation
Choice A rationale
The client has a hemoglobin level of 12 g/dL and a hematocrit of 34%, which are within normal ranges for a postpartum woman. A blood transfusion is typically indicated for severe anemia or significant blood loss, neither of which is suggested by these lab results. Therefore, a blood transfusion is not warranted in this case.
Choice B rationale
Rubella vaccination is indicated for a client who is non-immune to rubella, as indicated by the laboratory results. Rubella vaccination is important to protect the client from contracting rubella in future pregnancies, which can cause serious congenital defects. Since the client is not currently pregnant and not immune, vaccination can be safely administered postpartum to prevent future rubella infections.
Choice C rationale
Penicillin G potassium is an antibiotic that might be used for a client who is group B Streptococcus positive to prevent neonatal infection during delivery. However, this client is group B Streptococcus negative, so there is no indication for this antibiotic. There is no need to administer Penicillin G potassium in this scenario.
Choice D rationale
Hepatitis B immunoglobulin is used for newborns of mothers who are hepatitis B surface antigen positive to prevent perinatal transmission of the virus. Since the client's lab results indicate she is hepatitis B surface antigen negative, there is no need for Hepatitis B immunoglobulin. The client and her newborn are not at risk of hepatitis B transmission, so this intervention is not required. .
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