Morphine 4 mg intravenous is prescribed in the emergency department for a client with a myocardial infarction. In the medication machine is morphine 10 mg/mL. How many milliliters should the nurse administer? Round to the tenth

Calculation: Identify the ordered dose and available concentration Ordered Dose: 4 mg Available Concentration: 10 mg/mL Calculate the volume to administer Volume (mL) = Ordered Dose ÷ Concentration Volume = 4 ÷ 10 = 0.4 mL