WGU D439 Foundations of Nursing Comprehensive Study Guide | Latest 2026/2027 | Objective Assessment (OA) Prep – 350+ Practice Questions & Verified Answers

WGU D439 Foundations of Nursing Study Guide 1

, WGU D439
Foundations of Nursing Comprehensive Study Guide



A complete guide covering Professional Practice, Legal & Ethics,
Communication, Safety & Infection Control, the Nursing Process,
and Basic Skills with 100 Next-Generation NCLEX (NGN)
Practice Questions.




Western Governors University

Professional Nursing Program (Bsn)

Updated for NCLEX-RN Standards




WGU D439 Foundations of Nursing Study Guide 2

, Table of Contents

Section 1: Content Review

1.1 Professional Nursing Practice & Frameworks 3

1.2 Legal and Ethical Principles in Nursing 4

1.3 Therapeutic & Interprofessional Communication 5

1.4 Patient Safety and Infection Control 6

1.5 The Clinical Nursing Process (ADPIE) 7

1.6 Basic Nursing Skills and Health Assessment 8

Section 2: 100 NCLEX-Style Practice Questions & Rationales 10

Section 3: Answer Key Quick-View Matrix 44

Section 4: Appendices & Quick Reference Checklists 46




WGU D439 Foundations of Nursing Study Guide 3

, SECTION 1: DETAILED CONTENT REVIEW k k k k




Professional Nursing Practice & Frameworks

Professional nursing practice is grounded in clinical reasoning, accountability, and specific theoretical frameworks
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designed to ensure holistic patient-centered care. Understanding these foundational concepts is crucial for the WGU
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D439 objective assessment and the NCLEX-RN.
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Maslow's Hierarchy of Needs k k k




Nurses use Maslow’s Hierarchy to prioritize patient care. Physiological needs must always be met before safety, love,
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belonging, self-esteem, or self-actualization can be addressed.
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• Physiological Needs: Oxygen, water, food, elimination, temperature regulation, rest, sex, physical activity.
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• Safety & Security: Physical safety (protection from harm, falls, infections) and emotional security (freedom
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kfrom anxiety, financial security).
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• Love & Belonging: Support systems, family structures, social integration, intimacy.
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• Self-Esteem: Sense of accomplishment, respect, autonomy, competence. k k k k k k




• Self-Actualization: Reaching full personal and professional potential. k k k k k k




MNEMONIC: ABC PRIORITIZATION VS MASLOW
A-B-C always takes precedence over higher-level needs!
A - Airway: Patency, obstruction, stridor, tongue displacement.
B - Breathing: Rate, depth, accessory muscle use, oxygen saturation, cyanosis.
C - Circulation: Heart rate, blood pressure, capillary refill, pulse quality, active hemorrhage.

If a client has severe pain (Physiological) but is showing signs of airway compromise, the Airway must be
addressed first.



Benner’s Stages of Nursing Expertise k k k k




Dr. Patricia Benner introduced the concept that nurses develop clinical skills and judgment through
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k structured experiential learning across five distinct phases:
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1. Novice: Rigidly adheres to rules and regulations. Lacks clinical experience; actions are highly structured and
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ktask-oriented.
2. Advanced Beginner: Demonstrates marginally acceptable performance. Can identify recurring meaningful
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kcomponents of a clinical situation but relies on guidelines. k k k k k k k k




3. Competent (2-3 years): Displays conscious, deliberate planning. Efficiently organizes and prioritizes tasks,
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krecognizing long-term implications of clinical actions. k k k k k




WGU D439 Foundations of Nursing Study Guide 4