BSN215 Exam 3 Actual Exam Style V2 |
BSN 215 HESI RN Specialty Dosage
Calculation | Nightingale
1. A physician orders 0.5 grams of an antibiotic. The medication is available in 250 mg
capsules. How many capsules should the nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: B
Rationale: First, convert 0.5 grams to milligrams by multiplying by 1000, which equals 500
mg. Next, divide the ordered dose of 500 mg by the available dose of 250 mg per capsule.
This calculation confirms that the nurse should give 2 capsules to fulfill the order.
2. An IV of 1,000 mL Normal Saline is ordered to infuse over 8 hours. At what rate in mL/hr
should the nurse set the infusion pump?
A. 125 mL/hr
B. 120 mL/hr
C. 100 mL/hr
,D. 150 mL/hr
Answer: A
Rationale: To find the hourly rate, divide the total volume of 1,000 mL by the total time of
8 hours. The calculation results in exactly 125 mL per hour. The nurse should program the
pump to this specific rate for accurate fluid administration.
3. The nurse is preparing to administer Heparin 5,000 units subcutaneously. The vial is labeled
10,000 units/mL. How many mL will the nurse inject?
A. 2 mL
B. 1 mL
C. 1.5 mL
D. 0.5 mL
Answer: D
Rationale: Divide the ordered dose of 5,000 units by the concentration of 10,000 units/mL.
This division results in a volume of 0.5 mL. It is essential to use a tuberculin syringe for
such small, precise subcutaneous volumes.
4. A patient weighs 154 lbs. What is the patient’s weight in kilograms?
A. 60 kg
B. 77 kg
C. 70 kg
, D. 80 kg
Answer: C
Rationale: To convert pounds to kilograms, the weight in pounds must be divided by 2.2.
Dividing 154 by 2.2 results in a weight of 70 kg. Accurate weight conversion is critical for
calculating weight-based medication dosages safely.
5. Order: Cefazolin 500 mg IM. Available: Cefazolin 1 gram vial with instructions to
reconstitute with 2.5 mL of sterile water to provide a concentration of 330 mg/mL. How many
mL should be administered?
A. 1.5 mL
B. 1.2 mL
C. 1.8 mL
D. 2.0 mL
Answer: A
Rationale: Use the concentration provided after reconstitution, which is 330 mg/mL.
Divide the ordered dose of 500 mg by 330 mg/mL to find the volume. Rounding to the
nearest tenth, the resulting volume to be administered is 1.5 mL.
6. The healthcare provider orders 1 liter of D5W to infuse at 100 mL/hr using a tubing with a
drop factor of 15 gtt/mL. What is the flow rate in gtt/min?
A. 20 gtt/min
BSN 215 HESI RN Specialty Dosage
Calculation | Nightingale
1. A physician orders 0.5 grams of an antibiotic. The medication is available in 250 mg
capsules. How many capsules should the nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: B
Rationale: First, convert 0.5 grams to milligrams by multiplying by 1000, which equals 500
mg. Next, divide the ordered dose of 500 mg by the available dose of 250 mg per capsule.
This calculation confirms that the nurse should give 2 capsules to fulfill the order.
2. An IV of 1,000 mL Normal Saline is ordered to infuse over 8 hours. At what rate in mL/hr
should the nurse set the infusion pump?
A. 125 mL/hr
B. 120 mL/hr
C. 100 mL/hr
,D. 150 mL/hr
Answer: A
Rationale: To find the hourly rate, divide the total volume of 1,000 mL by the total time of
8 hours. The calculation results in exactly 125 mL per hour. The nurse should program the
pump to this specific rate for accurate fluid administration.
3. The nurse is preparing to administer Heparin 5,000 units subcutaneously. The vial is labeled
10,000 units/mL. How many mL will the nurse inject?
A. 2 mL
B. 1 mL
C. 1.5 mL
D. 0.5 mL
Answer: D
Rationale: Divide the ordered dose of 5,000 units by the concentration of 10,000 units/mL.
This division results in a volume of 0.5 mL. It is essential to use a tuberculin syringe for
such small, precise subcutaneous volumes.
4. A patient weighs 154 lbs. What is the patient’s weight in kilograms?
A. 60 kg
B. 77 kg
C. 70 kg
, D. 80 kg
Answer: C
Rationale: To convert pounds to kilograms, the weight in pounds must be divided by 2.2.
Dividing 154 by 2.2 results in a weight of 70 kg. Accurate weight conversion is critical for
calculating weight-based medication dosages safely.
5. Order: Cefazolin 500 mg IM. Available: Cefazolin 1 gram vial with instructions to
reconstitute with 2.5 mL of sterile water to provide a concentration of 330 mg/mL. How many
mL should be administered?
A. 1.5 mL
B. 1.2 mL
C. 1.8 mL
D. 2.0 mL
Answer: A
Rationale: Use the concentration provided after reconstitution, which is 330 mg/mL.
Divide the ordered dose of 500 mg by 330 mg/mL to find the volume. Rounding to the
nearest tenth, the resulting volume to be administered is 1.5 mL.
6. The healthcare provider orders 1 liter of D5W to infuse at 100 mL/hr using a tubing with a
drop factor of 15 gtt/mL. What is the flow rate in gtt/min?
A. 20 gtt/min
