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NurseDive Free Nursing Practice Question
A nurse is preparing to administer lorazepam 0.05 mg/kg via IV bolus to a client who weighs 175 lb. Available is lorazepam 2 mg/mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
This question is an excerpt from Nurse Dive's nursing test bank - ATI RN Dosage Calculation Proctored Exam. Take the full exam now
Full Explanation
Step 1 is to convert the client’s weight from pounds to kilograms. So, the client’s weight in kg is 175 lb ÷ 2.2 lb/kg = 79.55 kg. Step 2 is to calculate the total dose of lorazepam. The total dose is 0.05 mg/kg × 79.55 kg = 3.9775 mg. Step 3 is to calculate the volume to administer. The volume is 3.9775 mg ÷ 2 mg/mL = 1.98875 mL.
So, the correct answer is 2 mL after rounding to the nearest whole number.
Similar Questions
A nurse is preparing to administer amoxicillin 775 mg PO. Available is amoxicillin oral suspension 400 mg/5 mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Full Explanation
Step 1 is to calculate the volume to administer. The volume is 775 mg ÷ (400 mg/5 mL) = 9.6875 mL.
So, the correct answer is 10 mL after rounding to the nearest whole number.
A nurse is preparing to administer ceftriaxone 250 mg IM to an adult client who has a gonococcal infection.
The label on the vial indicates to reconstitute each vial with sterile water 2.1 mL to yield ceftriaxone 350 mg/mL. How many mL of the reconstituted medication should the nurse administer?
(Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)
Full Explanation
Step 1 is to calculate the amount of medication per mL. This is done by dividing the total amount of medication (250 mg) by the concentration (350 mg/mL). So, 250 mg ÷ 350 mg/mL = 0.71 mL.
A nurse is preparing to administer digoxin 750 mcg IV bolus.
How many mg should the nurse administer? (Round the answer to the nearest hundredth.
Use a leading zero if it applies.
Do not use a trailing zero.). mg.
Full Explanation
Step 1 is to convert mcg to mg. This is done by dividing the total amount of medication (750 mcg) by 1000 (since 1 mg = 1000 mcg). So, 750 mcg ÷ 1000 = 0.75 mg.