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ECG Case 189: Hypokalemia

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This article is an answer to ECG Case 189

  • Rate: 84/min
  • Rhythm:
    • Regular
    • Sinus Rhythm
  • Axis:
    • Normal (+70 deg)
  • Intervals:
    • PR – Prolonged (~220ms)
    • QRS – Normal (100ms)
    • QT – 300ms (QTc Bazette ~ 320ms)

  • Segments:
    • ST downward slurring in V3-6, II
  • Additional:
    • qS in V1
    • T wave flattening in II, III, V4-6
    • Prominent U waves in V2-3
    • Prominent P waves in leads II, III
ECG of Hypokalemia
ECG of Hypokalemia

Interpretation

These ECG changes are consistent with hypokalemia. Also the QT shortening maybe due to hypercalcaemia. This patient’s potassium was 1.1 mmol/L

READ MORE about Hypokalemia ECG Changes [With Examples]

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