A nurse is preparing to administer ketorolac 0.4 mg/kg IM to an adolescent who weighs 96.8 Ib. The amount available is ketorolac 15 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.2"]
To calculate this, first convert the adolescent's weight from pounds to kilograms: 96.8 lb * (1 kg / 2.2 lb) =
44 kg.
Then, calculate the dose of ketorolac in mg: 0.4 mg/kg * 44 kg = 17.6 mg.
Finally, divide the dose in mg by the concentration of the ketorolac to find the volume to administer: 17.6 mg / (15 mg/mL) = 1.173 mL, which rounds to 1.2 mL when rounded to the nearest tenth.
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Related Questions
Correct Answer is ["4.2"]
Explanation
Step 1: Convert the preschooler’s weight from pounds to kilograms. 37 lbs ÷ 2.2 = 16.8181 kg (rounded to four decimal places)
Step 2: Calculate the total daily dose of cephalexin in mg. 50 mg/kg/day × 16.8181 kg = 840.905 mg/day (rounded to three decimal places)
Step 3: Determine the number of doses per day. 24 hours ÷ 6 hours = 4 doses/day
Step 4: Calculate the dose per administration. 840.905 mg/day ÷ 4 doses/day = 210.22625 mg/dose (rounded to five decimal places)
Step 5: Convert the dose from mg to mL using the available suspension concentration. 250 mg ÷ 5 mL = 50 mg/mL
Step 6: Calculate the volume to be administered per dose. 210.22625 mg ÷ 50 mg/mL = 4.204525 mL (rounded to six decimal places)
Step 7: Round the final answer to the nearest tenth. 4.204525 mL rounded to the nearest tenth = 4.2 mL
Therefore, the nurse should administer 4.2 mL per dose.
Correct Answer is ["0.9"]
Explanation
To find out how many mL of gentamicin the nurse should administer, we need to set up a proportion. If 40 mg of gentamicin is equivalent to 1 mL, then 36 mg of gentamicin is equivalent to x mL.
The proportion can be writen as 40/1 = 36/x. Solving for x, we get x = (36 * 1) / 40 = 0.9 mL.
The answer is rounded to the nearest tenth as instructed.
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