Clinical readiness asset
ECG interpretation quick guide
This quick guide supports ECG interpretation without replacing formal clinical review. Use it to structure rhythm reading: rate, regularity, P waves, PR interval, QRS width, ST-T changes, symptoms, and escalation risk.
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ECG sequence
- Confirm patient and lead quality.
- Assess rate and rhythm regularity.
- Check P waves, PR, and QRS.
- Review ST-T changes with symptoms.
- Escalate unstable rhythms immediately.
Red flags
- Chest pain with ST elevation.
- Wide-complex tachycardia with instability.
- Bradycardia with hypotension or altered mentation.
- New rhythm change plus syncope.
| Step | Question | Why it matters |
|---|---|---|
| Rate | Fast, slow, or normal? | Frames urgency and perfusion risk |
| Regularity | Regularly regular, irregular, or chaotic? | Separates sinus, AF, flutter, blocks, and lethal rhythms |
| QRS | Narrow or wide? | Suggests supraventricular versus ventricular origin |
Frequently asked questions
- Can this ECG guide diagnose a patient?
- No. It is an educational study aid. Clinical ECG interpretation requires patient assessment, local protocols, and qualified clinical review.
- What should learners check first on an ECG?
- Confirm patient, lead quality, rate, rhythm regularity, P waves, PR interval, QRS width, and symptoms before interpreting isolated findings.