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Hyper- Hypokalemia

Hypokalemia

  • Reduction in [K+] conduction delays repolarization,and increased depolarisation causing: causing

    • Prolonged QTc
    • Flattened / inverted T waves
    • ST depression
    • Appearance of Prominant U waves in the ECG
    • Pseudo P wave peak
    • tachyarrthymias

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Presentation

  • tachyarrthymias (atrial fibrillation, torsadess de pointes, ventricular tachycardia, and ventricular fibrillation)
  • M/C cause death Diaphargm paralysis

Example 1

alt text - Widespread ST depression and T wave inversion - Prominent U waves - Long QU interval

This patient had a serum K+ of 1.7

Example 2

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Hyperkalemia

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  • Tall T waves
  • ST elevation
  • p wave disappereance
  • Pre interval prolongation alt text

Hyperkalemia Examples

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