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ECG Interpretation - Aster Medical Center
Rate & Rhythm
- Heart rate: ~60-65 bpm
- Rhythm: Atrial Fibrillation with controlled ventricular response
- No distinct P waves visible in any lead
- Fine fibrillatory (f-waves) baseline oscillations, best seen in V1, II, and III
- R-R intervals are irregularly irregular - the hallmark of AF
Axis
- Normal axis (~0° to +30°)
- QRS is positive in Lead I and Lead II
Intervals
| Parameter | Finding |
|---|---|
| PR interval | Not measurable (no P waves - AF) |
| QRS duration | Normal (~80-90 ms), narrow complexes |
| QTc | Visually normal |
QRS Morphology
- V1: rS pattern - normal
- V1-V6: Normal R-wave progression, transition by V4-V6
- Limb leads: Normal voltage and morphology
- No pathological Q waves - no evidence of prior MI
ST Segments & T Waves
- ST segments: Isoelectric - no acute elevation or depression
- T waves: Normal in most leads
- Mild T-wave flattening in V1-V2 (non-specific, can be normal variant)
- Slightly prominent T-wave in V3, proportional to QRS - likely benign
Summary
Primary finding: Atrial Fibrillation with controlled ventricular response (~60-65 bpm)
No evidence of:
- Acute MI or ischemia (no ST changes)
- Bundle branch block (narrow QRS)
- Left ventricular hypertrophy
- Prior transmural infarction (no pathological Q waves)
Clinical note: This ECG interpretation is for informational purposes only and must be correlated with the patient's clinical history, symptoms, and reviewed by the treating physician. AF warrants assessment for stroke risk (CHA₂DS₂-VASc score), rate/rhythm control strategy, and anticoagulation.
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