Final answer:
To calculate the necessary volume of diazepam, convert the toddler's weight to kilograms, then multiply by the dosage per kilogram and divide by the concentration of the diazepam solution to obtain the volume. The calculated volume does not match the provided options, indicating the need for verification or consultation.
Step-by-step explanation:
The student's question is about calculating the correct dose of diazepam for a toddler based on their weight and the concentration of the medication available. To find the amount of diazepam to administer, we must first convert the toddler's weight from pounds to kilograms. Since there are 2.2 pounds in 1 kilogram, the toddler weighs 22lbs ÷ 2.2 = 10kg. Then calculate the dosage by multiplying the toddler's weight by the dosage per kilogram: 10kg × 0.3mg/kg = 3mg. Next, to determine the volume to administer based on a concentration of 5mg/mL, divide the total dosage required by the concentration: 3mg ÷ 5mg/mL = 0.6mL. However, this dosage does not exactly match any of the options provided. The nurse should recheck the calculation, verify the correct dosage options with a healthcare supervisor, or consult the pharmacy as there might be a mistake in the question's options.