A nurse is preparing to administer lorazepam 0.05 mg/kg IM 2 hr prior to surgery to a client who weighs 138 lb. If the available lorazepam injection is 2 mg/mL, how many mL should the nurse administer? .
The Correct Answer is ["1.57 "]
Step 1: Calculate the dose of lorazepam. The doctor ordered 0.05 mg/kg, so 0.05 mg/kg × 62.73 kg (138 lb ÷ 2.2 lb/kg) = 3.14 mg.
Step 2: Calculate the volume of lorazepam injection to administer. The available lorazepam injection is 2 mg/mL, so 3.14 mg ÷ 2 mg/mL = 1.57 mL. The nurse should administer 1.57 mL of lorazepam injection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["15 "]
Explanation
Step 1: Convert the client’s weight from pounds to kilograms. 1 kg = 2.2 lb, so 44 lb ÷ 2.2 = 20 kg.
Step 2: Calculate the total daily dose of phenobarbital. The doctor ordered 6 mg/kg/day, so 6 mg/kg/day × 20 kg = 120 mg/day.
Step 3: Divide the total daily dose into two equal doses, as it is to be given every 12 hours. So, 120 mg/day ÷ 2 = 60 mg/dose.
Step 4: Calculate the volume of phenobarbital elixir to administer per dose. The available phenobarbital elixir is 20 mg/5 mL, so (60 mg ÷ 20 mg) × 5 mL = 15 mL. The nurse should administer 15 mL of phenobarbital elixir per dose.
Correct Answer is ["0.75 "]
Explanation
Step 1: Calculate the volume of meperidine injection to administer. The available meperidine injection is 100 mg/mL, so 75 mg ÷ 100 mg/mL = 0.75 mL. The nurse should administer 0.75 mL of meperidine injection.
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