A nurse is preparing to administer benztropine mesylate 2 mg IM to a client who has schizophrenia and is experiencing an extrapyramidal reaction to antipsychotic medication. Available is benztropine mesylate injection 1 mg/mL in 2 mL ampules. 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.)

Identify the Desired Dose and Available Concentration: Desired Dose: 2 mg of benztropine mesylate Available Concentration: 1 mg/mL (This means there is 1 mg of benztropine mesylate in every 1 mL of solution) Set up the Calculation: We need to find the volume (in mL) that contains the desired dose of 2 mg. We can use the following formula: Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL) Plug in the Values and Calculate: Volume (mL) = 2 mg / 1 mg/mL Volume (mL) = 2 mL Round to the Nearest Whole Number : 2 mL