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Ecg reading abnormal and normal identity to treat the patient do you teach me and MBBS LEVEL

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electrocardiography AND interpretation

I can teach this at MBBS level, step by step, focusing on both recognition and the first clinical actions. ECG treatment must always be based on the patient’s condition, symptoms, vital signs, and a 12-lead ECG, not the tracing alone.

ECG learning roadmap

  1. ECG basics
    • Paper speed, calibration, leads and cardiac views
    • Waves, segments, intervals: P, PR, QRS, ST, T, QTc
    • Cardiac conduction system and axis
  2. A systematic method for every ECG
    • Confirm patient and technical quality
    • Rate
    • Rhythm
    • Axis
    • P waves and PR interval
    • QRS width and morphology
    • ST segment, T waves, Q waves
    • QT/QTc comparison with prior ECG
  3. Normal ECG
    • Normal sinus rhythm
    • Normal intervals and normal axis
    • Normal variants, including early repolarization
  4. Common abnormal rhythms
    • Sinus bradycardia and sinus tachycardia
    • Atrial fibrillation and flutter
    • SVT
    • Ventricular tachycardia and ventricular fibrillation
    • AV blocks and bundle branch blocks
  5. Ischaemia and myocardial infarction
    • ST elevation MI patterns and reciprocal changes
    • NSTEMI/unstable angina patterns
    • Territory localisation: anterior, inferior, lateral, posterior, right ventricular
    • Immediate emergency approach
  6. Important non-ischaemic patterns
    • Hyperkalaemia, hypokalaemia, hypocalcaemia, hypercalcaemia
    • Pericarditis
    • Pulmonary embolism
    • Left/right ventricular hypertrophy and strain
    • Long QT and torsades risk
  7. Treating the patient safely
    • Stable vs unstable tachycardia
    • Symptomatic bradycardia
    • Cardiac arrest rhythms
    • When to call senior help / activate emergency or STEMI pathway

The core rule

First assess the patient, then read the ECG. A person with chest pain, shock, syncope, altered consciousness, severe breathlessness, or ongoing palpitations may need emergency assessment even if you are unsure of the ECG.
A reliable ECG sequence is:
Rate -> Rhythm -> Axis -> P -> PR -> QRS -> ST/T -> QTc -> Compare with old ECG -> Clinical correlation
The first teaching module can be “How to read a normal ECG and identify sinus rhythm”, then we build into abnormalities using case-style ECGs.
Which area should we start with?
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