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 ["1.2"]
Explanation
Step 1 is to convert the child’s weight from pounds to kilograms since the dosage of morphine is prescribed in mg/kg. We know that 1 kg is approximately equal to 2.2 lb. So, the child’s weight in kg is:
51 lb ÷ 2.2 = 23.18 kg
Step 2 is to calculate the total amount of morphine the child should receive per dose. The doctor ordered 0.1 mg of morphine per kg of body weight. So, the total amount of morphine per dose is:
0.1 mg/kg × 23.18 kg = 2.318 mg
Step 3 is to calculate the volume of morphine injection to be administered. We know that the available morphine injection has a concentration of 2 mg/mL. So, the volume in mL is:
2.318 mg ÷ (2 mg/mL) = 1.159 mL
Rounding this to the nearest tenth gives 1.2 mL. So, the nurse should administer 1.2 mL of morphine injection per dose.
So, the correct answer is 1.2 mL.
Correct Answer is ["0.67"]
Explanation
To find out how many mL of risperidone the nurse should administer, we need to set up a proportion.
If 37.5 mg of risperidone is equivalent to 1 mL, then 25 mg of risperidone is equivalent to x mL. The proportion can be writen as 37.5/1 = 25/x. Solving for x, we get x = (25 * 1) / 37.5 = 0.67 mL. The answer is rounded to the nearest hundredth as instructed.
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