DOSAGE CALCULATION RN FUNDAMENTALS ACTUAL EXAM 2024 WITH 50 QUESTIONS AND CORRECT DETAILED ANSWERS (ACCURATE STEP-BY-STEP SOLUTIONS TO DOSAGE CALC / MED CALC PROBLEMS)

DOSAGE CALCULATION RN FUNDAMENTALS ACTUAL EXAM 2024 WITH 50 QUESTIONS AND CORRECT DETAILED ANSWERS (ACCURATE STEP-BY-STEP SOLUTIONS TO DOSAGE CALC / MED CALC PROBLEMS) A nurse is preparing to administer phenytoin 200 mg PO. Available is phenytoin oral suspension 125 mg/5 mL. How many mL should the nurse administer? (Round to nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.) - ANSWER-Answer: 8 mL Follow these steps for the Ratio and Proportion method of calculation: Step 1: What is the unit of measurement the nurse should calculate? mL Step 2: What is the dose the nurse should administer? Dose to administer = Desired 200 mg Step 3: What is the dose available? Dose available = Have 125 mg Step 4: Should the nurse convert the units of measurement? No Step 5: What is the quantity of the dose available? 5 mL Step 6: Set up an equation and solve for X. Have/Quantity = Desired/X 125 mg/ 5 mL = 200 mg /X mL X mL = 8 mL Step 7: Round if necessary. Step 8: Determine whether the amount to administer makes sense. If there are 125 mg/5 mL and the prescription reads 200 mg, it makes sense to administer 8 mL. The nurse should administer phenytoin 8 mL PO.