A nurse is preparing to administer naloxone 10 mcg/kg IM to a client who weighs 165 lb. Available is naloxone 0.4 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 ["1.9"]
Step 1 is to convert the client’s weight from pounds to kilograms since the dosage is prescribed in mcg/kg. Given that 1 kg = 2.2 lb, we calculate:
165 lb ÷ 2.2 = 75 kg
Step 2 is to calculate the volume of naloxone to be administered. The prescribed dosage is 10 mcg/kg, so we first determine the total dose:
10 mcg/kg × 75 kg = 750 mcg
Next, we convert the available concentration of naloxone from mg/mL to mcg/mL:
0.4 mg/mL × 1000 mcg/mg = 400 mcg/mL
Now, we calculate the required volume by dividing the total dose by the concentration:
750 mcg ÷ 400 mcg/mL = 1.875 mL
Rounding to the nearest tenth, the correct amount to administer is 1.9 mL.
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Related Questions
Correct Answer is ["2"]
Explanation
Step 1 is to determine the amount of medication needed. The order is for 1 g and the available medication is 1 g/10 mL. So, we calculate 1 g ÷ 1 g/10 mL = 10 mL. Since 1 tsp is approximately 5 mL, we then calculate 10 mL ÷ 5 mL/tsp = 2 tsp. So the correct answer is 2 tsp.
Correct Answer is C
Explanation
Choice A rationale:
The label states to add 3.5 mL of diluent for reconstitution, not 5 mL. So, choice A is incorrect.
Choice B rationale:
After reconstitution, the vial will contain 1 gram of medication, not 500 mg. So, choice B is incorrect.
Choice C rationale:
The label does state to use the solution within 1 hour of reconstitution. So, choice C is correct.
Choice D rationale:
The label states the medication can be used for IM or IV, not only IM. So, choice D is incorrect.
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