BSN215 Exam 2 Actual Exam Style V2 |
BSN 215 HESI RN Specialty Dosage
Calculation | Nightingale
1. The healthcare provider orders Digoxin 0.25 mg PO daily. The pharmacy provides Digoxin
0.125 mg tablets. How many tablets should the nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Answer: D
Rationale: To find the number of tablets, divide the ordered dose of 0.25 mg by the
available dose of 0.125 mg. This calculation results in 2 tablets. The nurse must always
verify the dosage strength on the medication label before administration to ensure patient
safety.
2. A patient is to receive 1,000 mL of 0.9% Normal Saline over 8 hours. At what rate should
the nurse set the IV pump in mL/hr?
A. 125 mL/hr
B. 100 mL/hr
C. 150 mL/hr
,D. 80 mL/hr
Answer: A
Rationale: To determine the infusion rate in mL/hr, divide the total volume of 1,000 mL by
the total time of 8 hours. 1,000 divided by 8 equals 125 mL/hr. This is a standard
calculation used for electronic infusion devices to maintain steady fluid replacement.
3. Order: Heparin 8,000 units subcutaneous every 12 hours. Available: Heparin 10,000
units/mL. How many mL should the nurse administer per dose?
A. 0.4 mL
B. 0.8 mL
C. 1.2 mL
D. 1.0 mL
Answer: B
Rationale: Using the ‘Desired over Have’ formula, divide 8,000 units by 10,000 units/mL.
The resulting volume is 0.8 mL per dose. Precision is critical when measuring
anticoagulants like Heparin to prevent hemorrhage or subtherapeutic levels.
4. The physician orders an IV infusion of D5W at 100 mL/hr. The tubing has a drop factor of 15
gtt/mL. What is the gravity drip rate in gtt/min?
A. 15 gtt/min
B. 20 gtt/min
, C. 25 gtt/min
D. 30 gtt/min
Answer: C
Rationale: Calculate the drip rate by multiplying the volume per hour (100 mL) by the
drop factor (15 gtt/mL) and then dividing by 60 minutes. 1,500 divided by 60 equals 25
gtt/min. This calculation is essential when an infusion pump is unavailable or for gravity-
fed lines.
5. Order: Amoxicillin 500 mg PO every 8 hours. Available: Amoxicillin suspension 250 mg/5
mL. How many mL should the nurse give per dose?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 15 mL
Answer: C
Rationale: Divide the desired dose of 500 mg by the concentration of 250 mg and multiply
by the volume of 5 mL. This results in () * 5 = 10 mL. Accurate measurement of
oral suspensions is vital for achieving therapeutic antibiotic levels in the patient.
BSN 215 HESI RN Specialty Dosage
Calculation | Nightingale
1. The healthcare provider orders Digoxin 0.25 mg PO daily. The pharmacy provides Digoxin
0.125 mg tablets. How many tablets should the nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Answer: D
Rationale: To find the number of tablets, divide the ordered dose of 0.25 mg by the
available dose of 0.125 mg. This calculation results in 2 tablets. The nurse must always
verify the dosage strength on the medication label before administration to ensure patient
safety.
2. A patient is to receive 1,000 mL of 0.9% Normal Saline over 8 hours. At what rate should
the nurse set the IV pump in mL/hr?
A. 125 mL/hr
B. 100 mL/hr
C. 150 mL/hr
,D. 80 mL/hr
Answer: A
Rationale: To determine the infusion rate in mL/hr, divide the total volume of 1,000 mL by
the total time of 8 hours. 1,000 divided by 8 equals 125 mL/hr. This is a standard
calculation used for electronic infusion devices to maintain steady fluid replacement.
3. Order: Heparin 8,000 units subcutaneous every 12 hours. Available: Heparin 10,000
units/mL. How many mL should the nurse administer per dose?
A. 0.4 mL
B. 0.8 mL
C. 1.2 mL
D. 1.0 mL
Answer: B
Rationale: Using the ‘Desired over Have’ formula, divide 8,000 units by 10,000 units/mL.
The resulting volume is 0.8 mL per dose. Precision is critical when measuring
anticoagulants like Heparin to prevent hemorrhage or subtherapeutic levels.
4. The physician orders an IV infusion of D5W at 100 mL/hr. The tubing has a drop factor of 15
gtt/mL. What is the gravity drip rate in gtt/min?
A. 15 gtt/min
B. 20 gtt/min
, C. 25 gtt/min
D. 30 gtt/min
Answer: C
Rationale: Calculate the drip rate by multiplying the volume per hour (100 mL) by the
drop factor (15 gtt/mL) and then dividing by 60 minutes. 1,500 divided by 60 equals 25
gtt/min. This calculation is essential when an infusion pump is unavailable or for gravity-
fed lines.
5. Order: Amoxicillin 500 mg PO every 8 hours. Available: Amoxicillin suspension 250 mg/5
mL. How many mL should the nurse give per dose?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 15 mL
Answer: C
Rationale: Divide the desired dose of 500 mg by the concentration of 250 mg and multiply
by the volume of 5 mL. This results in () * 5 = 10 mL. Accurate measurement of
oral suspensions is vital for achieving therapeutic antibiotic levels in the patient.
