1. A 30 kg dog is receiving fluids at a rate of 40 mL/hour. It needs a drug added to 500 mL of fluids so that it receives 2 mg/kg each hour. The drug has a strength of 2%. What volume of drug will you add?
A.15ml
B.37.5ml
C.12.5ml
D.3ml
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To find the volume of drug to add, we first need to calculate the total dosage needed for the dog.
Step 1: Calculate the total dose needed per hour for the dog:
The dog weighs 30 kg, and it needs to receive 2 mg/kg/hour.
So, the total dose needed per hour for the dog is:
30 kg * 2 mg/kg/hour = 60 mg/hour
Step 2: Convert the total dose needed to mL:
The drug has a strength of 2%, which means it contains 2 mg of the active ingredient per 100 mL.
So, we can set up a proportion to find the amount of drug needed in mL:
2 mg/100 mL = 60 mg/x mL
Cross-multiplying, we get:
2 mg * x mL = 100 mL * 60 mg
Simplifying:
2x = 6000
Dividing both sides by 2:
x = 6000/2
x = 3000 mL
Step 3: Calculate the volume of drug to add:
The dog is receiving fluids at a rate of 40 mL/hour. We need to add the drug to 500 mL of fluids.
So, the volume of drug to add is:
500 mL + 3000 mL = 3500 mL
Now, let's check the answer choices to find the correct volume:
A. 15 mL
B. 37.5 mL
C. 12.5 mL
D. 3 mL
Comparing the calculated volume (3500 mL) to the answer choices, we can see that none of the answer choices match the calculated volume. Therefore, none of the given answer choices are correct.
Please note that there may be a mistake in the calculations or the given answer choices.