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12-Lead ECG Analysis

Settings: AUTO 10mm/mV, 25mm/s, EMC 35Hz, DFT 0.5Hz

Rate & Rhythm

  • Heart rate: ~75 bpm
  • Rhythm: Normal sinus rhythm - upright P waves preceding every QRS in leads I, II, and aVF; inverted P wave in aVR (expected)
  • R-R intervals are regular throughout
  • Mild baseline wander/artifact in limb leads - non-pathological

Axis

  • QRS axis: Normal (~+30° to +60°)
  • Lead I: predominantly upright
  • Lead aVF: predominantly upright
  • Lead II: strongly positive

P Waves & PR Interval

  • P wave amplitude <2.5 mm, duration <0.12 s - normal morphology
  • No evidence of left or right atrial enlargement
  • PR interval: 140-160 ms - normal AV conduction, constant throughout

QRS Complex

  • Duration: 80-90 ms - no bundle branch block
  • R-wave progression: normal - transition zone between V3 and V4
  • Voltage: normal - no criteria met for LVH or RVH
  • No pathological Q waves in any lead

ST Segments & T Waves

  • ST segments: isoelectric across all leads - no elevation or depression
  • T waves: upright and normal in I, II, aVL, aVF, and V3-V6
  • aVR: inverted T wave - normal finding
  • V1-V2: mild T-wave inversion/flattening - T inversion in V1 alone is a normal variant; mild extension into V2 can also be a normal variant (particularly in young adults or females), but should be correlated clinically if chest symptoms are present

QTc

  • Visually normal - QT interval less than half the R-R interval, QTc estimated within normal limits (<450 ms men / <460 ms women)

Interpretation

Normal sinus rhythm. Normal axis. No acute ischemic changes. No conduction abnormality.
This is a reassuring, essentially normal ECG. The only finding warranting clinical correlation is the mild T-wave inversion in V1-V2, which is most often a normal variant but should be noted if the patient has any ischemic symptoms or risk factors. No immediate intervention is indicated based on this tracing alone.
Disclaimer: This AI analysis is for educational/informational purposes only. Always correlate with clinical presentation and consult a qualified physician for diagnostic decisions.
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