The nurse is confirming a pediatric dose from an adult dose sent from the pharmacy.
What is an accurate method for calculating the child's dose?
Body surface area (BSA)
Actual body weight
Ideal body weight (BW)
Actual body height
The Correct Answer is B
This is the most commonly used method for calculating pediatric doses, especially for medications that are weight-based. The pediatric dose is typically calculated as a fraction or percentage of the adult dose based on the child's weight. For example, if the adult dose is 100mg and the child weighs 50kg, the child's dose may be calculated as 50mg (50% of the adult dose). Actual body weight takes into account the child's current weight, which can be an important factor in determining the appropriate dose.
Reasons why the other choices are not answers:
A. Body surface area is a method for calculating pediatric doses, but it is typically used for medications that are associated with toxicity or have a narrow therapeutic index.
C. Ideal body weight is an estimate of what a person's weight should be based on their height and gender, rather than their actual weight. It may be used in situations where a child is significantly overweight or underweight, but it is rarely used for pediatric dosing.
D. Actual body height is rarely used for pediatric dosing, as it does not take into account the child's weight or other important factors. It may be used in certain situations, such as when dosing growth hormone therapy.
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Related Questions
Correct Answer is C
Explanation
To calculate the dose that the child receives, we need to first convert the volume of the suspension from teaspoons to milliliters. One teaspoon is equal to 5 milliliters, so 2 teaspoons is equal to 10 milliliters. Then, we can use the concentration of the suspension to find the amount of cefuroxime in 10 milliliters. The concentration is 25 mg in 2 mL, or 12.5 mg in 1 mL. Therefore, the amount of cefuroxime in 10 mL is:
10 mL × 12.5 mg/mL = 125 mg
Therefore, the child receives 125 mg of cefuroxime once a day orally.
Correct Answer is B
Explanation
We can use the following formula to calculate the infusion time:
Infusion time (in hours) = Remaining volume (in mL) / Infusion rate (in mL/hr)
First, let's convert the current time to minutes since we will be calculating the infusion time in minutes as well:
19:30 = 19 hours x 60 minutes/hour + 30 minutes = 1170 minutes Now we can substitute the given values into the formula:
Infusion time (in hours) = 376 mL / 40 mL/hr Infusion time (in hours) = 9.4 hours
To convert this to hours and minutes, we can separate the integer and decimal parts of the answer:
9 hours (integer part) and 0.4 hours x 60 minutes/hour = 24 minutes (decimal part)
Therefore, the infusion time is 9 hours and 24 minutes, and the infusion will finish at approximately 04:54 (19:30 + 9 hours and 24 minutes).
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