ECG Case 291 Interpretation

This post is an answer to the ECG Case 291

  • Rate: Mean ventricular rate 132 bpm
  • Rhythm:
    • Atrial flutter
    • Variable block 2:1, 3:1

  • Axis: Right axis deviation
  • Intervals: QRS – Normal (100ms)
  • Segments: Minor ST depression inferior leads may be secondary to superimposed flutter waves
  • Additional:
    • Flutter waves – rate ~300 bpm
    • Negative flutter waves in inferior leads with positive waves in V1

Interpretation

  • Atrial Flutter
    • Variable Block
    • Typical Counter-clockwise flutter

What happened next ?

The patient’s significant underlying cardiac and pulmonary disease precluded DC cardioversion. He was treated with digoxin and following resolution of his hypoxemia he reverted to sinus rhythm.

READ MORE: Atrial Flutter: ECG Interpretation [With Examples]

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