An antibiotic is reconstituted with 128ml of water to yield 250mg/5ml.
A) If the child weighs 66 pounds what will the dose be at 5mg/kg/dose?
B) If the medication is given qid x 10 days, will the 150ml bottle be enough?
as the child is 66lb = 29.3kg
a) 5mg ----> 1 kg
?mg ----> 29.3kg
therefore 29.3 x 5 = 146.5mg dose
b) we have 250mg/5ml
then 150ml bottle will give 7500mg/150ml
each day is 146.5mg, 10days will be 1465mg. so i think we have enough.
:)
thanks!
To determine the answers to these questions, we need to go through a few calculations. Let's break it down step by step:
A) To calculate the dose for a 66-pound child at 5mg/kg/dose, we first need to convert the weight of the child from pounds to kilograms.
1. Convert pounds to kilograms:
- There are 2.205 pounds in 1 kilogram.
- Divide 66 pounds by 2.205 to get the weight in kilograms.
66 pounds / 2.205 = 29.9 kg (rounded to one decimal place)
2. Now that we have the weight of the child in kilograms, we can calculate the dose:
- The dose is 5mg per kilogram of body weight.
- Multiply the weight (in kg) by the dose (in mg/kg).
29.9 kg × 5 mg/kg = 149.5 mg
Therefore, the dose for a 66-pound child at 5mg/kg/dose would be approximately 149.5 mg.
B) To determine if the 150ml bottle is enough for qid (four times a day) administration for 10 days, we need to calculate the total volume of the medication needed for 10 days.
1. Calculate the volume per dose:
- The concentration of the reconstituted antibiotic is 250mg/5ml.
- Divide the desired dose (149.5 mg) by the concentration to find the volume needed for a single dose.
149.5 mg / (250 mg/5 ml) = 2.99 ml (rounded to two decimal places)
2. Calculate the total volume for 10 days:
- Since the medication is administered qid (four times a day), multiply the volume per dose by 4 to get the total volume per day.
2.99 ml × 4 = 11.96 ml (rounded to two decimal places)
- Multiply the total volume per day by 10 to cover 10 days of administration.
11.96 ml × 10 = 119.6 ml (rounded to one decimal place)
Therefore, the total volume of medication needed for 10 days is approximately 119.6 ml. Since the 150ml bottle is larger than the required volume, it should be enough.
Remember to follow the instructions provided by a healthcare professional and consult them for any specific concerns or guidance regarding medications.