HESI Dosage Calculations Exam
Comprehensive
Practice Exam
with 100 Verified
Questions and
Rationales
,TABLE OF CONTENTS
Section Topic Area Questions
Section 1 Basic Conversions and Tablet Calculations 1-15
Section 2 Oral Liquid Medications 16-25
Section 3 Injectable Medications 26-35
Section 4 IV Flow Rate Calculations (ml/hr) 36-45
Section 5 IV Infusion Time and Volume Remaining 46-50
Section 6 Weight-Based Dosage Calculations 51-60
Section 7 Critical Care: mcg/kg/min Calculations 61-70
Section 8 Heparin and Insulin Infusions 71-75
Section 9 Pediatric and BSA-Based Calculations 76-82
Section 10 Fluid Balance and Intake/Output 83-88
Section 11 Enteral Feedings and Tube Medications 89-92
Section 12 Reconstitution and Dilution Problems 93-97
Section 13 Advanced Practice Calculations 98-100
,SECTION 1: Basic Conversions and Tablet
Calculations
Question 1
A client is prescribed baclofen 30 mg PO daily. The medication is
supplied as 20 mg scored tablets. How many tablets should the
nurse administer?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
Correct Answer: C) 1.5 tablets
Rationale: Divide the desired dose by the available dose: 30 mg ÷ 20
mg per tablet = 1.5 tablets. The tablet is scored, allowing for
accurate splitting .
Question 2
A client requires 45 mg of a medication that is supplied as 15 mg
tablets. How many tablets will be given?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
Correct Answer: C) 3 tablets
Rationale: 45 mg ÷ 15 mg per tablet = 3 tablets .
, Question 3
A prescription calls for 22.5 mg of a drug available in 10 mg tablets
that are scored. How many tablets should be given?
A) 1.5 tablets
B) 2 tablets
C) 2.25 tablets
D) 2.5 tablets
Correct Answer: C) 2.25 tablets
Rationale: 22.5 mg ÷ 10 mg per tablet = 2.25 tablets. The nurse
would need to split tablets accordingly to achieve the exact dose .
Question 4
A client receives a prescription for azithromycin (Zithromax) 500 mg
PO. Azithromycin is available as 250 mg scored tablets. How many
tablets should the nurse administer per dose?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 4 tablets
Correct Answer: C) 2 tablets
Rationale: Using the formula D/H: 500 mg ÷ 250 mg = 2 tablets .
Question 5
A client with hypertension receives a prescription for carteolol
(Cartel) 7.5 mg PO daily. The drug is available in 2.5 mg tablets.
How many tablets should the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
Comprehensive
Practice Exam
with 100 Verified
Questions and
Rationales
,TABLE OF CONTENTS
Section Topic Area Questions
Section 1 Basic Conversions and Tablet Calculations 1-15
Section 2 Oral Liquid Medications 16-25
Section 3 Injectable Medications 26-35
Section 4 IV Flow Rate Calculations (ml/hr) 36-45
Section 5 IV Infusion Time and Volume Remaining 46-50
Section 6 Weight-Based Dosage Calculations 51-60
Section 7 Critical Care: mcg/kg/min Calculations 61-70
Section 8 Heparin and Insulin Infusions 71-75
Section 9 Pediatric and BSA-Based Calculations 76-82
Section 10 Fluid Balance and Intake/Output 83-88
Section 11 Enteral Feedings and Tube Medications 89-92
Section 12 Reconstitution and Dilution Problems 93-97
Section 13 Advanced Practice Calculations 98-100
,SECTION 1: Basic Conversions and Tablet
Calculations
Question 1
A client is prescribed baclofen 30 mg PO daily. The medication is
supplied as 20 mg scored tablets. How many tablets should the
nurse administer?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
Correct Answer: C) 1.5 tablets
Rationale: Divide the desired dose by the available dose: 30 mg ÷ 20
mg per tablet = 1.5 tablets. The tablet is scored, allowing for
accurate splitting .
Question 2
A client requires 45 mg of a medication that is supplied as 15 mg
tablets. How many tablets will be given?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
Correct Answer: C) 3 tablets
Rationale: 45 mg ÷ 15 mg per tablet = 3 tablets .
, Question 3
A prescription calls for 22.5 mg of a drug available in 10 mg tablets
that are scored. How many tablets should be given?
A) 1.5 tablets
B) 2 tablets
C) 2.25 tablets
D) 2.5 tablets
Correct Answer: C) 2.25 tablets
Rationale: 22.5 mg ÷ 10 mg per tablet = 2.25 tablets. The nurse
would need to split tablets accordingly to achieve the exact dose .
Question 4
A client receives a prescription for azithromycin (Zithromax) 500 mg
PO. Azithromycin is available as 250 mg scored tablets. How many
tablets should the nurse administer per dose?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 4 tablets
Correct Answer: C) 2 tablets
Rationale: Using the formula D/H: 500 mg ÷ 250 mg = 2 tablets .
Question 5
A client with hypertension receives a prescription for carteolol
(Cartel) 7.5 mg PO daily. The drug is available in 2.5 mg tablets.
How many tablets should the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
