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NCLEX Review & Nursing School

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Potassium

– Hypokalemia

  • Would show inversion of the T wave
  • Appearance of a U wave
  • ST depression

– causes ventricular dysrhytmmias

– Increase risk of digoxin toxicity.

– Hyperkalemia

  • Tall peaked T wave

Sodium

– Hyponatremia

  • Usually serum sodium decrease caused by use of diuretics

– Hypernatremia

Calcium

Hypocalcemia

  • Can cause ventricular dysrhytmias
  • Prolonged ST and QT intervals

 

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