ATI Dosage Calculation and Safe
Medication Administration 3.0 -
Injectable Medications
A nurse is preparing to administer morphine 5 mg subcutaneous to a client. Available is morphine 10 mg/mL. How many mL should the nurse administer? (Round to the nearest tenth.) - ANSWER 0.5 mL
Rationale:
1. 10 mg/1 mL = 5 mg/x mL
2. 10x = 5 3. x = 0.5 mL
A nurse is preparing to administer methylprednisolone acetate 120 mg IM daily. Available is methylprednisolone acetate injection 80 mg/mL. How many mL should the nurse administer per dose? (Round to the nearest tenth.) - ANSWER 1.5 mL
Rationale:
1. 80 mg/mL = 120 mg/x mL
2. 80x = 120
3. x = 1.5 mL A nurse is preparing to administer levothyroxine 0.25 mg IV bolus stat. Available is
levothyroxine injection 100 mcg/mL. How many mL should the nurse administer? (Round to the nearest tenth.) - ANSWER 2.5 mL
Rationale:
1. 0.25 mg = 250 mcg
2. 100 mcg/1 mL = 250 mcg/x mL
3. 100x = 250
4. x = 2.5 mL
A nurse is preparing to administer meperidine 100 mg IM stat. Available is meperidine 75 mg/mL. How many mL should the nurse administer? (Round to the
nearest tenth.) - ANSWER 1.3 mL
Rationale:
1. 75 mg/mL = 100 mg/x mL
2. 75x = 100
3. x = 1.333 mL
4. 1.3 mL (rounded)
Medication Administration 3.0 -
Injectable Medications
A nurse is preparing to administer morphine 5 mg subcutaneous to a client. Available is morphine 10 mg/mL. How many mL should the nurse administer? (Round to the nearest tenth.) - ANSWER 0.5 mL
Rationale:
1. 10 mg/1 mL = 5 mg/x mL
2. 10x = 5 3. x = 0.5 mL
A nurse is preparing to administer methylprednisolone acetate 120 mg IM daily. Available is methylprednisolone acetate injection 80 mg/mL. How many mL should the nurse administer per dose? (Round to the nearest tenth.) - ANSWER 1.5 mL
Rationale:
1. 80 mg/mL = 120 mg/x mL
2. 80x = 120
3. x = 1.5 mL A nurse is preparing to administer levothyroxine 0.25 mg IV bolus stat. Available is
levothyroxine injection 100 mcg/mL. How many mL should the nurse administer? (Round to the nearest tenth.) - ANSWER 2.5 mL
Rationale:
1. 0.25 mg = 250 mcg
2. 100 mcg/1 mL = 250 mcg/x mL
3. 100x = 250
4. x = 2.5 mL
A nurse is preparing to administer meperidine 100 mg IM stat. Available is meperidine 75 mg/mL. How many mL should the nurse administer? (Round to the
nearest tenth.) - ANSWER 1.3 mL
Rationale:
1. 75 mg/mL = 100 mg/x mL
2. 75x = 100
3. x = 1.333 mL
4. 1.3 mL (rounded)
