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Interpret this ecg

Reading File
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Finding Sources
Here is a systematic interpretation of this 12-lead ECG:

ECG Interpretation

Technical Details (from the tracing header)

  • Rate: 81 bpm
  • Paper speed: 25.0 mm/s
  • Gain: 10.0 mm/mV
  • Filter: 0.16-40 Hz, 50 Hz notch
  • Machine: MAC5000 1.02
  • Date: 13-Jun-2026, 18:49:09
  • Hospital: Valluvanad Hospital Complex Ltd. (Urgent/Emergency)
  • Patient: Sex M/F (partially visible), age ~25 (partially readable)

Systematic Analysis

1. Rate

81 bpm - Normal rate (normal sinus range: 60-100 bpm)

2. Rhythm

The rhythm appears regular with consistent R-R intervals across all leads. P waves are visible preceding each QRS complex, consistent with normal sinus rhythm.

3. Axis

  • Lead I: positive QRS
  • Lead aVF: positive QRS
  • This suggests a normal axis (approximately 0° to +90°)

4. P Waves

P waves appear present and upright in leads I, II, and aVF - normal morphology suggesting sinus origin. PR interval appears within normal limits (~120-200 ms).

5. QRS Complex

  • QRS duration appears narrow (< 120 ms), suggesting normal ventricular conduction
  • No obvious bundle branch block pattern
  • R-wave progression in V1-V6: the tracing shows normal R-wave transition across the precordial leads

6. ST Segment & T Waves

  • The image resolution and angle make fine ST changes difficult to assess with certainty
  • No grossly obvious ST elevation or depression is clearly visible in the limb leads
  • T waves appear generally upright in lateral leads

7. QT Interval

Not measurable with precision from this image quality, but no gross QT prolongation is apparent.

Impression

Normal sinus rhythm at 81 bpm with no gross acute ischemic changes visible.
The ECG does not show obvious:
  • ST elevation (no clear STEMI pattern)
  • Pathological Q waves
  • Bundle branch block
  • Significant arrhythmia

Important Limitations

  1. Image quality/angle - The ECG strip is being held at an angle, which limits precise interval measurement. Fine ST changes (1-2 mm elevation/depression) could be missed.
  2. This is NOT a substitute for formal clinical reading by the treating physician at the bedside, especially given this is from an Emergency/Urgent setting.
  3. The patient details suggest this was done in an emergency context - clinical correlation (symptoms, history, serial ECGs, troponin) is mandatory.
If there is any clinical suspicion of ACS, a repeat ECG in 15-30 minutes and serial troponins are indicated regardless of this interpretation.
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