A caring for a client who has schizophrenia and is experiencing hallucinations. The provider prescribes chlorpromazine 50 mg IM every 4 hr as needed. Available is chlorpromazine injection 25 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Given: Desired dose: Chlorpromazine 50 mg IM Available concentration: Chlorpromazine injection 25 mg/mL To find: Volume to administer per dose (in mL) Step 1: Set up the proportion We can use the following proportion to solve the problem: (Desired dose) / (Available concentration) = Volume to administer Step 2: Substitute the values Plugging in the given values, we get: (50 mg) / (25 mg/mL) = Volume to administer Step 3: Simplify To simplify, we can invert the denominator and multiply: (50 mg) x (1 mL / 25 mg) = Volume to administer The "mg" units cancel out, leaving us with: (50 x 1 mL) / 25 = Volume to administer Step 4: Calculate Performing the multiplication and division, we get: 50 mL / 25 = Volume to administer 2 mL = Volume to administer