Hypokalemia

Hypokalemia (U-wave): not enough extracellular K (<3.5) for repolarization, so neuro symptoms (muscle weakness, cardio arrhythmias), EKG shows U waves after T


Browse disease: Endocrine | Neuro | Renal | GI | Cardio | Respiratory | Hemonc
  • Hypokalemia
  • U-wave
  • not enough extracellular K (<3.5) for repolarization, so neuro symptoms (muscle weakness, cardio arrhythmias), EKG shows U waves after T
  • Muscle weakness/paralysis (lower extremity first). Hx of GI losses (vomit, diarrhea, tube drainage) hypokalemia periodic paralysis
  • muscle weakness/paralysis, arrhythmias, HR--
  • EKG (U wave after T), arrhythmias, HR--
  • Ingestion--, Cellular intake++: Na-K pump++ (insulin, beta2/epi), alkalosis (vomit). Renal loss: GI triggers (vomit, diarrhea), diuretics, aldosteronism. Lack extracellular K = can't repolarize
  • give K (esp for diabetics b4 u give insulin): KCl, Kbicarb (if acidosis)