The healthcare provider prescribes an IV solution of regular insulin 100 units in 250 mL of 0.45% saline to infuse at 12 units/hour. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only.)
The Correct Answer is ["30"]
Given:
Total insulin in solution: 100 units
Volume of solution: 250 mL
Infusion rate: 12 units/hour
Step 1: Determine the concentration of insulin in the solution:
Concentration (units/mL) = Total insulin (units) / Volume of solution (mL)
Concentration (units/mL) = 100 units / 250 mL
Concentration (units/mL) = 0.4 units/mL
Step 2: Calculate the infusion rate in mL/hr:
Infusion rate (mL/hr) = Infusion rate (units/hr) / Concentration (units/mL)
Infusion rate (mL/hr) = 12 units/hr / 0.4 units/mL
Infusion rate (mL/hr) = 30 mL/hr
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["6.25"]
Explanation
Given:
Ordered dose of erythromycin: 250 mg
Concentration of erythromycin suspension: 200 mg/5 mL
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
250 mg / Volume = 200 mg/5 mL
Step 3: Solve for the unknown volume:
Volume = 250 mg / (200 mg/5 mL)
Volume = 250 mg x (5 mL / 200 mg)
Volume = 6.25 mL
Correct Answer is ["120"]
Explanation
Given:
Ordered dose of Labetalol HCl: 2 mg/minute
Concentration of Labetalol HCl: 200 mg in 200 mL (1 mg/mL)
Step 1: Calculate the infusion rate in mg/hour:
Infusion rate (mg/hour) = Ordered dose (mg/minute) x 60 minutes/hour
Infusion rate (mg/hour) = 2 mg/minute x 60 minutes/hour
Infusion rate (mg/hour) = 120 mg/hour
Step 2: Calculate the infusion rate in mL/hour:
Infusion rate (mL/hour) = Infusion rate (mg/hour) / Concentration (mg/mL)
Infusion rate (mL/hour) = 120 mg/hour / 1 mg/mL
Infusion rate (mL/hour) = 120 mL/hour
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