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  4. ECG Rate
  5. ECG Rhythm (Rate Bradycardia)
  6. ECG QRS (Irregular Rhythm, Bradycardia Rate)

Is the QRS complex narrow or wide?

Narrow <0.12 seconds (<3 small squares)
Wide >0.12 seconds (>3 small squares)

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ECG Menu

  • ECGs
    • ECG Learning
    • ECG Rate
      • ECG Rhythm (Rate Normal)
        • ECG QRS (Regular Rhythm, Normal Rate)
          • ECG P-Waves (QRS narrow, Regular Rhythm, Normal Rate)
            • ECG P-R interval (Normal P-Waves, QRS narrow, Regular Rhythm, Normal Rate)
        • ECG QRS (Irregular Rhythm, Normal Rate)
      • ECG Rhythm (Rate Tachycardia)
        • ECG QRS (Regular Rhythm, Tachycardia Rate)
          • ECG P-R interval (Normal P-Waves, QRS narrow, Regular Rhythm, Normal Tachycardia)
          • ECG P-Waves (QRS narrow, Regular Rhythm, Tachycardia Rate)
      • ECG Rhythm (Rate Bradycardia)
        • ECG QRS (Regular Rhythm, Bradycardia Rate)
          • ECG P-R interval (Normal P-Waves, QRS narrow, Regular Rhythm, Normal Bradycardia)
        • ECG QRS (Irregular Rhythm, Bradycardia Rate)
    • ST-Elivation
      • ST-Elivation (Short PR)
      • ST-Elivation (Prolonged Constant PR)
      • ST-Elivation (Prolonged Progressive PR)
      • ST-Elivation (Prolonged Variable PR)

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