A nurse is preparing to administer isoniazid 187 mg IM. Available is isoniazid injection 100 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero If it applies. Do not use a trailing zero.)

Identify the given information: Dose of isoniazid: 187 mg Concentration of isoniazid injection: 100 mg/mL Calculate the volume of isoniazid injection to be administered: Volume = Dose (mg) / Concentration (mg/mL) Substitute the values: Volume = 187 mg / 100 mg/mL Volume = 1.87 mL Round the answer to the nearest tenth: Volume ≈ 1.9 mL