Hyperkalemia

Hyperkalemia


HYPERKALEMIA

  • Hyperkalemia is defined as plasma potassium level of 5.5mM/L
  • Severe hyperkalemia is >6.0mM/L

Etiology-

  • Renal failure
  • Decrease distal flow
  • Decrease K+ secretion (most common)
  • Impaired Na reabsorption
  • Increase chloride reabsorption
  • Pseudohyperkalemia
  • Drugs- ACE inhibitors, NSAIDs, amiloride, Digitalis overdose, Heparin, lithium, succinyl chloride, cyclosporine.

Pseudohyperkalemia-

  • It is an artifactual increase in serum K+ due to release of K+ in venipuncture.

Clinical feature-

  • Cardiac arrhythmias
  • Sinus bradycardia, sinus arrest
  • Ventricular tachycardia
  • The ECG in hyperkalemia classically shows increase QRS duration.
  • Prolonged PR interval, prolonged QRS duration and ventricular asystole are  manifestations of hyperkalemia.

Treatment can be studied in module 1726

Exam Important

  • Renal failure
  • Decrease distal flow
  • Decrease K+ secretion (most common)
  • Impaired Na reabsorption
  • Increase chloride reabsorption
  • Pseudohyperkalemia
  • Drugs- ACE inhibitors, NSAIDs, amiloride, Digitalis overdose, Heparin, lithium, succinyl chloride.

Pseudohyperkalemia-

  • It is an artifactual increase in serum K+ due to release of Kin venipuncture.
Don’t Forget to Solve all the previous Year Question asked on Hyperkalemia

Module Below Start Quiz

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