C790 OA ULTIMATE Study Guide | Nursing Informatics Simplified (Unit 01)

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This video is your deep-dive masterclass into the core theories that dominate the C790 Objective Assessment (OA).

If you’ve struggled to connect systems theory, chaos theory, CAS, Cynefin, DIKW, change models, diffusion of innovation, and the systems life cycle into one coherent framework — this lesson solves that problem.

This is not surface memorization.

This is conceptual integration — exactly how the C790 exam tests you.

🎯 What You Will Master in This Video

By the end of this lesson, you will confidently understand:

• Systems theory foundations
• Open vs closed systems
• GIGO and input-output logic
• Structural system models
• Homeostasis, equifinality, entropy, specialization, reverberation
• Chaos and complexity theory
• Complex Adaptive Systems (CAS)
• The Cynefin framework (all five domains)
• Shannon-Weaver communication model
• DIKW continuum (Blum, Graves, Nelson)
• Learning theory & andragogy
• Lewin’s change theory
• Rogers’ diffusion of innovation
• Staggers & Nelson Systems Life Cycle
• STEEEP principles
• STAR model
• Kotter’s change conditions
• Metrics & benchmarking

This is the full conceptual map behind C790.

🧠 Systems Theory (Core Foundation)

You’ll master:

• Definition of a system (interacting parts + boundary)
• Open vs closed systems (healthcare = open systems)
• GIGO (Garbage In, Garbage Out)
• Structural models (Hierarchical vs Web structure)
• Sub-system, target system, super-system
• Attributes (specifications)
• Dynamic homeostasis (driving vs restraining forces)
• Equifinality (open systems only)
• Entropy vs Negentropy
• Specialization
• Reverberation (intended + unintended consequences)

⚠️ Exam Tip:
Reverberation ALWAYS includes both positive and negative ripple effects.

🌪 Chaos & Complexity Theory

You’ll understand:

• Nonlinear change
• Reiterative feedback loops
• Small input → massive output effects
• Fractal patterns (“Out of chaos comes order”)

This explains why healthcare systems behave unpredictably under pressure.

🔗 Complex Adaptive Systems (CAS)

You’ll learn:

• CAS definition (diverse, autonomous, interdependent agents)
• Six CAS characteristics:

Nonlinear change

Distributed control

Constant learning

Self-organization

Co-evolution with environment

Order + disorder coexist

Healthcare systems are textbook CAS environments.

🧭 Cynefin Framework (Decision-Making Tool)

You’ll clearly distinguish all five domains:

• Simple → Sense, Categorize, Respond
• Complicated → Sense, Analyze, Respond
• Complex → Probe, Sense, Respond
• Chaotic → Act, Sense, Respond
• Disorder → Unclear domain

The exam LOVES Cynefin scenario questions.

Memorize the response sequences.

📡 Shannon-Weaver Communication Model

Five components:

Source → Transmitter → Channel (+ Noise) → Receiver → Destination

You’ll learn:

• What noise means in healthcare IT
• Where breakdown occurs
• Why the model is criticized (linear)
• How to map failure points in scenarios

📊 Data-to-Wisdom Models (DIKW)

You’ll master:

• Blum Model (Data → Information → Knowledge)
• Graves Model (Empirical, Ethical, Personal, Aesthetic)
• Nelson Model (Added Wisdom)
• DIKW continuum visualization

Exam anchor:

Nelson = Added Wisdom.

Wisdom = appropriate application of knowledge with compassion.

📚 Learning Theory & Andragogy

You’ll understand:

• Constructionist theory
• Social constructivism
• Retention formats (episodic, hierarchical, linked)
• Learning domains:

Cognitive

Affective

Psychomotor
• Andragogy (adult learning principles)

🔄 Change Theory
Lewin’s Model

Unfreeze → Move → Refreeze

Connected directly to:
Driving forces vs Restraining forces

Refreezing is where most implementations fail.

📈 Diffusion of Innovation (Rogers)

Five adopter categories:

• Innovators
• Early adopters
• Early majority
• Late majority
• Laggards

The exam will describe behaviors — you identify the category.

🌀 Staggers & Nelson Systems Life Cycle

Eight stages (Memory Trick: APDTIMER):

A – Analyze
P – Plan
D – Develop/Purchase
T – Test
I – Implement
M – Maintain & Evolve
E – Evaluate
R – Return to Analyze (Spiral forward, NOT circular)

This spiral nature is tested directly.

⚠️ Disclaimer

This content is for educational and exam preparation purposes only.
We are not affiliated with or endorsed by Western Governors University (WGU).


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