Med Calculations Practice Test | NCLEX-RN Mock Test

Welcome to the Med Calculations Practice Test for the NCLEX-RN exam. This quiz is specifically designed to sharpen your skills in the Pharmacological & Parenteral Therapies domain, a critical component of safe nursing practice. You will encounter 25 questions that mirror the style and difficulty of the real NCLEX, covering essential topics such as IV drip rates, dosage calculations by weight, reconstitution, titrations, and safe dose ranges. Challenge yourself, review the rationales, and build your confidence. After submitting your answers, you’ll see your score and a detailed review of each question. You can also download a PDF copy of all questions and their correct answers for future study. Good luck, future nurse!

1. The healthcare provider orders an infusion of 1000 mL of 0.9% Normal Saline to run over 8 hours. The nurse should set the infusion pump to deliver how many mL/hr? (Round to the nearest whole number).

2. A client is to receive 500 mL of D5W over 6 hours. The IV tubing has a drop factor of 15 gtt/mL. The nurse should regulate the IV to deliver how many drops per minute (gtt/min)? (Round to the nearest whole number).

3. A pediatric client weighs 44 lbs. The order is for amoxicillin 30 mg/kg/day to be given in two divided doses. How many milligrams (mg) will the nurse administer per dose?

4. A client is receiving a continuous heparin infusion. The solution is 25,000 units of heparin in 500 mL of D5W. If the infusion pump is set to 12 mL/hr, how many units of heparin is the client receiving per hour?

5. The order is for Ceftriaxone 500 mg IV. The pharmacy provides a vial with 1 g of powder. The instructions state to add 3.6 mL of sterile water to yield a concentration of 250 mg/mL. How many mL will the nurse draw up for the correct dose?

6. A client is prescribed Digoxin 0.125 mg PO daily. The medication is available in 250 mcg tablets. How many tablets should the nurse administer?

7. A client with diabetes has a blood glucose level of 210 mg/dL. The sliding scale order states to administer 1 unit of regular insulin for every 15 mg/dL above 150 mg/dL. How many units of insulin will the nurse administer?

8. The order is for a Dopamine infusion at 5 mcg/kg/min for a client weighing 154 lbs. The pharmacy supplies Dopamine 400 mg in 250 mL of D5W. The nurse should set the infusion pump to what rate in mL/hr? (Round to the nearest whole number).

9. A child weighing 25 kg is ordered Acyclovir 250 mg IV every 8 hours. The safe dose range for this medication is 20-40 mg/kg/day. Is the total daily dose ordered for this child safe?

10. A client is prescribed potassium chloride 40 mEq PO. The available oral solution has a concentration of 20 mEq/15 mL. How many mL will the nurse administer?

11. A nurse needs to administer 4 mg of ondansetron IV push. The vial is labeled 8 mg/4 mL. How many mL should the nurse draw into the syringe?

12. The order is to administer a heparin bolus of 80 units/kg IV. The client weighs 180 lbs. The available heparin vial is 1,000 units/mL. How many mL will the nurse administer? (Round to the nearest tenth).

13. An IV of 1000 mL was started at 0800 to infuse over 8 hours. At 1200, the nurse observes that 600 mL has infused. At what rate (mL/hr) should the remaining fluid be infused to finish on time?

14. A client is ordered a Magnesium Sulfate 4 g IV bolus to be infused over 30 minutes. The pharmacy provides a premixed bag of 20 g of Magnesium Sulfate in 500 mL of D5W. The nurse should set the infusion pump to what rate in mL/hr?

15. The order is for Phenytoin 150 mg PO TID. The available oral suspension is 125 mg/5 mL. How many mL will the nurse administer per dose?

16. A nurse is preparing to administer Vancomycin 1.5 g in 250 mL of D5W over 90 minutes. The nurse should set the infusion pump to what rate in mL/hr? (Round to the nearest whole number).

17. A nitroglycerin drip is ordered to start at 10 mcg/min. The pharmacy supplies a standard solution of 50 mg of Nitroglycerin in 250 mL of D5W. The nurse should set the infusion pump to what rate in mL/hr?

18. During an 8-hour shift, a client receives an IV infusion of D5W at 75 mL/hr. The client also consumes 240 mL of water and 120 mL of juice. What is the client’s total fluid intake for the shift in mL?

19. A client is using a PCA pump with Morphine 1 mg/mL. The settings are: bolus dose 1 mg, lockout interval 10 minutes, and a continuous basal rate of 0.5 mg/hr. What is the maximum possible dose the client can receive in 4 hours?

20. An order is written for a Lidocaine infusion at 2 mg/min IV. The pharmacy provides a premixed bag containing 2 g of Lidocaine in 500 mL of D5W. The nurse should set the infusion pump to what rate in mL/hr?

21. A client is to receive 1200 mL of Lactated Ringer’s over 10 hours. The IV administration set has a drop factor of 10 gtt/mL. The nurse should set the flow rate to how many drops per minute (gtt/min)?

22. An infant is to receive 150 mL of D5 1/4 NS over 12 hours. Using a microdrip tubing (60 gtt/mL), the nurse should calculate the flow rate to be how many drops per minute (gtt/min)? (Round to the nearest whole number).

23. The nurse needs to determine the amount of dextrose in a 500 mL bag of D5W (5% Dextrose in Water). How many grams of dextrose are in the solution?

24. A TPN solution containing 50% dextrose is ordered to infuse at 80 mL/hr for 24 hours. How many total grams of dextrose will the patient receive during this period?

25. A vial of ampicillin contains 2 g of powder. The instructions state to reconstitute with 6.8 mL of sterile water to yield a final concentration of 250 mg/mL. The provider orders ampicillin 750 mg IV. How many mL will the nurse administer?

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