[STUDY GUIDE] • HIGH-YIELD PRACTICE & REVIEW EDITION
Dosage Calculation RN Fundamentals
Online Practice Assessment 3.0 50+
(2026/2027 Updated) Solved Exams + 100%
Verified Solutions Complete Q&A
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
50 Questions 10 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 50 verified questions with correct answers provided, focusing on dosage calculations
and pharmacological principles. It is designed to enhance understanding of medication administration and
conversions, making it suitable for exam preparation and academic review in pharmacology and nursing
fundamentals.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus Questions Share (%)
This topic focuses on calculating the correct dosages of
medications based on prescribed amounts and available
Dosage Calculations concentrations. 9 Qs 18.0%
Questions in this category require calculations based on the
patient's weight to determine the appropriate medication
Weight-Based Dosing dosage. 3 Qs 6.0%
This topic covers the conversion of medication measurements
Medication Conversions between different units and forms. 8 Qs 16.0%
Questions involve calculating the infusion rates for
intravenous medications and fluids based on prescribed
Infusion Rates volumes and time. 7 Qs 14.0%
This topic tests knowledge on the appropriate rounding rules
Rounding Rules for various types of medication dosages and measurements. 8 Qs 16.0%
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 23
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Questions here assess the ability to calculate total fluid intake
Total Intake Calculations from various food and drink sources. 3 Qs 6.0%
Medication Administration This category includes questions addressing various routes of
Routes medication administration and their conversions. 3 Qs 6.0%
This topic assesses general knowledge related to specific
Pharmacological Knowledge medications and their classifications. 3 Qs 6.0%
Questions focus on reviewing and clarifying prescriptions for
Prescriptions Review accuracy and appropriateness. 3 Qs 6.0%
This topic examines understanding of medication
Administration Frequency administration schedules and their implications. 3 Qs 6.0%
Total Exam Coverage 10 Integrated Topic Modules 50 Qs 100.0%
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 23
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
TOPIC 1: DOSAGE CALCULATIONS
9 Questions • 18.0% of Exam • This topic focuses on calculating the correct dosages of medications based on prescribed amounts
and available concentrations.
QUESTION 1
A nurse is preparing to administer codeine 20 mg PO every 6 hr PRN pain. Available is
codeine oral solution 10 mg/ 5 mL. How many mL should the nurse administer per
dose? (Round to the nearest whole number. Use a leading zero if it applies. Do not use
a trailing zero.)
Correct Answer: Answer: 10 mL
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? mL
Step 2: What is the dose the nurse should administer? Dose to administer = Desired 20 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 5 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg/ 5 mL = 20 mg/ X mL
X mL = 10 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes sense. If there are 10 mg/5 mL and the
prescription reads 20 mg, it makes sense to administer 10 mL. The nurse should administer codeine oral
solution 10 mL PO every 6 hr PRN pain.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 23
Dosage Calculation RN Fundamentals
Online Practice Assessment 3.0 50+
(2026/2027 Updated) Solved Exams + 100%
Verified Solutions Complete Q&A
Comprehensive Examination Question Bank • In-Depth Rationales • Concept Mapping
TOTAL QUESTIONS EXAM TOPICS RATIONALES
50 Questions 10 Modules 100% Verified
DOCUMENT OVERVIEW
This document contains 50 verified questions with correct answers provided, focusing on dosage calculations
and pharmacological principles. It is designed to enhance understanding of medication administration and
conversions, making it suitable for exam preparation and academic review in pharmacology and nursing
fundamentals.
EXAM BLUEPRINT & TOPIC DISTRIBUTION
Systematic breakdown of subject domains and exam coverage.
Topic Module Scope & Core Focus Questions Share (%)
This topic focuses on calculating the correct dosages of
medications based on prescribed amounts and available
Dosage Calculations concentrations. 9 Qs 18.0%
Questions in this category require calculations based on the
patient's weight to determine the appropriate medication
Weight-Based Dosing dosage. 3 Qs 6.0%
This topic covers the conversion of medication measurements
Medication Conversions between different units and forms. 8 Qs 16.0%
Questions involve calculating the infusion rates for
intravenous medications and fluids based on prescribed
Infusion Rates volumes and time. 7 Qs 14.0%
This topic tests knowledge on the appropriate rounding rules
Rounding Rules for various types of medication dosages and measurements. 8 Qs 16.0%
Confidential • Student Study Edition • Practice & Review Guide Page 1 of 23
,STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
Questions here assess the ability to calculate total fluid intake
Total Intake Calculations from various food and drink sources. 3 Qs 6.0%
Medication Administration This category includes questions addressing various routes of
Routes medication administration and their conversions. 3 Qs 6.0%
This topic assesses general knowledge related to specific
Pharmacological Knowledge medications and their classifications. 3 Qs 6.0%
Questions focus on reviewing and clarifying prescriptions for
Prescriptions Review accuracy and appropriateness. 3 Qs 6.0%
This topic examines understanding of medication
Administration Frequency administration schedules and their implications. 3 Qs 6.0%
Total Exam Coverage 10 Integrated Topic Modules 50 Qs 100.0%
Confidential • Student Study Edition • Practice & Review Guide Page 2 of 23
, STUDENT STUDY & MASTERY EDITION PRACTICE & REVIEW GUIDE
TOPIC 1: DOSAGE CALCULATIONS
9 Questions • 18.0% of Exam • This topic focuses on calculating the correct dosages of medications based on prescribed amounts
and available concentrations.
QUESTION 1
A nurse is preparing to administer codeine 20 mg PO every 6 hr PRN pain. Available is
codeine oral solution 10 mg/ 5 mL. How many mL should the nurse administer per
dose? (Round to the nearest whole number. Use a leading zero if it applies. Do not use
a trailing zero.)
Correct Answer: Answer: 10 mL
Follow these steps for the Ratio and Proportion method of calculation:
Step 1: What is the unit of measurement the nurse should calculate? mL
Step 2: What is the dose the nurse should administer? Dose to administer = Desired 20 mg
Step 3: What is the dose available? Dose available = Have 10 mg
Step 4: Should the nurse convert the units of measurement? No
Step 5: What is the quantity of the dose available? 5 mL
Step 6: Set up an equation and solve for X.
Have/Quantity = Desired/X
10 mg/ 5 mL = 20 mg/ X mL
X mL = 10 mL
Step 7: Round if necessary.
Step 8: Determine whether the amount to administer makes sense. If there are 10 mg/5 mL and the
prescription reads 20 mg, it makes sense to administer 10 mL. The nurse should administer codeine oral
solution 10 mL PO every 6 hr PRN pain.
Confidential • Student Study Edition • Practice & Review Guide Page 3 of 23
