Case Studies
Case Study: ECG Interpretation
Adapted for UK Nursing Education by: Lincoln Gombedza, RN (LD)
NMC Proficiency: Annexe B (Procedures) - "ECG recording and interpretation"
The Challenge
Students often struggle to link the squiggly lines on an ECG to the mechanical action of the heart.
The Prompt (For Education)
Copy and paste this into an approved assistant (for example Claude Sonnet 5 on Claude.ai or GPT-5.6 Luna on ChatGPT):
"Explain the P-QRS-T complex of a normal sinus rhythm to a first-year student.
The Visual Metaphor: Use the analogy of a 'Message Runner' visiting different parts of a castle (The Heart).
- SA Node: The King giving the order.
- AV Node: The Gatekeeper pausing the message.
- Bundle of His: The Fast Highway.
The Diagram: Create a Mermaid sequence diagram showing the electrical flow vs. time."
Visual Aid: The "Heart Castle" Analogy
Using metaphor (Kings, Gates, Highways) helps students visualise the invisible electrical pathway.
Learning Outcome
By linking the abstract concept (electricity) to a concrete story (the castle), retrieval practice becomes easier.
A student might ask: "I have an ECG here that looks like [description], what is it?" Teach them why this is dangerous. The AI cannot see the 'whole clinical picture' and will often hallucinate a diagnosis based on text descriptions.