The healthcare provider prescribes a continuous infusion of labetalol at 2 mg/minute. Labetalol HCI Injection USP 200 mg in 200 mL of 5% Dextrose Injection, USP, is delivered to the unit. How many mL/hour should the nurse program the infusion pump?
(Enter numerical value only.)
The Correct Answer is ["120"]
The healthcare provider prescribes a continuous infusion of labetalol at 2 mg/minute.
Labetalol HCI Injection USP 200 mg in 200 mL of 5% Dextrose Injection, USP, is delivered to the unit. This means that for every mL of the solution, there is 1 mg of labetalol (200 mg / 200 mL = 1 mg/mL).
To administer a dose of 2 mg/minute, the nurse should program the infusion pump to deliver 120 mL/hour (2 mg/minute × 60 minutes/hour = 120 mg/hour; 120 mg/hour ÷ 1 mg/mL = 120 mL/hour).
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Related Questions
Correct Answer is ["9"]
Explanation
To calculate the drop rate in gtts/minute, we can use the following formula:
Drop rate (gtts/minute) = (Volume (mL) x Drop factor) / Time (minutes)
Volume to be infused: 55 mL/hour
Drop factor: 10 gtt/mL
Time: 60 minutes/hour
(55 mL x 10 gtt/mL) / 60 minutes = 9.17 gtts/minute
We can round this value to the nearest whole number to get 9gtts/min
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).
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