What is the sodium level below which symptomatic hyponatremia occurs?

Answer – C

  • Symptomatic hyponatremia usually does not occur until the serum sodium level is ≤120 mEq/L.

Symptomatic Hyponatremia

  • Neurologic symptoms are present,
  • 3% normal saline should be used to increase the sodium
  • Increase of sodium level should be not more than 1 mEq/L per hour until the serum sodium level reaches 130 mEq/L or neurologic symptoms are improved.

Asymptomatic hyponatremia

  • Increase the sodium level by not more than 0.5 mEq/L per hour
  • Maximum increase of sodium levels of 12 mEq/L per day
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