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.)
The Correct Answer is ["2"]
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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 ["1.5"]
Explanation
Step 1 is to calculate the volume to administer using the formula:
Dose (mg) ÷ Concentration (mg/mL)
Given that the prescribed dose is 1.5 mg and the available concentration is 1 mg/mL, we calculate:
1.5 mg ÷ 1 mg/mL = 1.5 mL
Since the result is already rounded to the nearest tenth, the nurse should administer 1.5 mL of oxymorphone.
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