Dosage Calculation Rn Fundamentals Exam Questions (50 Terms) With Verified Definitions Updated 2024

A nurse is preparing to administer lorazepam 0.05 mg/kg IM 2 hours prior to surgery to a patient who weighs 138 lb. Available is lorazepam injection 2 mg/mL. How many mL should the nurse administer? (Round answer to nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.) {Ans: Answer: 1.6 mL Step 1: What is the unit of measurement the nurse should calculate? kg Step 2: Set up an equation and solve for X. 2.2 lb/ 1 kg = Client's weight in lb/X kg 2.2 lb/1 kg = 138 lb/X kg X kg = 62.727272 kg Step 3: What is the unit of measurement the nurse should calculate? mg Step 4: Set up an equation and solve for X. X = Dose per kg × Client's weight in kg X mg = 0.05 mg/kg × 62.727272 kg X mg = 3.136363 mg Step 5: What is the unit of measurement the nurse should calculate? mL Step 6: What is the dose the nurse should administer? Dose to administer = Desired 3.136363 mg Step 7: What is the dose available? Dose available = Have 2 mg Step 8: Should the nurse convert the units