The healthcare provider prescribes lorazepam at a dose of 50 mcg/kg intramuscularly 2 hours before a scheduled procedure for a client who weighs 74 kg. The medication is available in a 2 mg/mL vial. How many mL should the nurse administer?
(Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.85"]
The healthcare provider prescribes lorazepam at a dose of 50 mcg/kg intramuscularly 2 hours before a scheduled procedure for a client who weighs 74 kg.
The client should receive 3700 mcg of lorazepam (50 mcg/kg * 74 kg). Since 1 mg is equivalent to 1000 mcg, 3700 mcg is equivalent to 3.7 mg.
The medication is available in a 2 mg/mL vial, so the nurse should administer 1.85 mL of medication (3.7 mg / 2 mg/mL).
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Related Questions
Correct Answer is ["75"]
Explanation
The healthcare provider prescribes an IV solution of isoproterenol 1 mg in 250 mL of Dextrose in Water (D/W) at a rate of 300 mcg/hour.
Since 1 mg is equal to 1000 mcg, the solution contains 1000 mcg of isoproterenol in 250 mL.
This means that for every mL of the solution, there is 4 mcg of isoproterenol (1000 mcg / 250 mL = 4 mcg/mL).
To administer a dose of 300 mcg/hour, the nurse should program the infusion pump to deliver 75 mL/hour (300 mcg/hour ÷ 4 mcg/mL = 75 mL/hour).
Correct Answer is ["0.9"]
Explanation
To calculate the number of milliliters the nurse should administer, we can use the following formula: Dose to administer = Ordered dose / Available dose
In this case, the ordered dose is 90 mg and the available dose is 100 mg/1 mL. We can calculate the dose to administer as follows:
90 mg / 100 mg/1 mL = 0.9 mL.
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