ECG Interpretation

• Paper speed: 25 mm/s | Gain: 10 mm/mV (standard)
• Filters: 0.5-35 Hz, AC 50 Hz
• Patient: Female ("elangeshwri"), Age ~47 years
• Institution: Health Haven | Doctor: Bijin

Systematic Analysis

1. Rate

• R-R interval measures approximately 27-28 small squares
• Heart rate: ~54-65 bpm (borderline low-normal; possibly mild sinus bradycardia at ~55 bpm based on the limb lead strip)

2. Rhythm

• Regular sinus rhythm - P wave precedes every QRS complex with consistent morphology
• No ectopic beats, no dropped beats visible

3. P Waves

• Upright in II, aVF (normal sinus origin confirmed)
• Inverted in aVR (normal)
• Biphasic/flat in V1 (normal finding)
• P wave morphology: normal

4. PR Interval

• ~4 small squares = ~160 ms (normal: 120-200 ms)
• No AV block

5. QRS Complex

• Duration: ~2 small squares = ~80 ms (narrow, normal <120 ms)
• No bundle branch block
• Normal R-wave progression across V1-V6: small r in V1, progressive R growth, transition at V3-V4
• No pathological Q waves identified

6. Electrical Axis

• QRS positive in lead I and aVF
• Normal axis (0° to +90°)

7. ST Segments

• Isoelectric in all 12 leads
• No ST elevation (no STEMI pattern)
• No ST depression (no acute ischemia)

8. T Waves

• Upright in I, II, V2-V6
• Inverted in aVR (normal)
• Flat/minimally inverted in aVL (normal variant when QRS is low/negative in that lead)
• No hyperacute T waves, no deep symmetric inversions

9. QT Interval

• Visually normal (occupies <50% of RR interval)
• No prolonged QT

Overall Impression

Normal to near-normal ECG with possible mild sinus bradycardia (~55 bpm)

Clinical Note

⚠️ This interpretation is for educational purposes only and should not replace evaluation by a qualified clinician with full access to the patient's history and clinical context.