National Nursing Review : Nursing Study Resources & Health Tips

Recalls:
Potassium is the first intracellular cation
Usual biological values:
Extracellular: 3.5-5 mEq / L
Intracellular: 130-140 mEq / L
It achieves a critical gradient in resting membrane potential and maintains the intracellular osmolarity

Entries:
Requirements are 0.5 mmol/kg/24h
The dietary intake is essential.

Outputs:
Digestive secretions, sweat
The bulk of secretion occurs via the urine

Potassium regulation:
Definition:
Pathological state in which the potassium is greater than 5 mEq / L
Clinical signs:
Muscle fatigue, cramps
Laboratory findings: K> 5 mEq / L

Etiology:

• Failure of excretion (renal failure)
• Acidosis
• Crush syndrome
• Cell lysis
• Adrenal insufficiency
• Excess capital

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