Can diuretics cause hypovolemic hyponatremia?

Updated: Jun 17, 2019
  • Author: Eric E Simon, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

Diuretics may induce hypovolemic hyponatremia. Note that thiazide diuretics, in contrast to loop diuretics, impair the diluting mechanism without limiting the concentrating mechanism, thereby impairing the ability to excrete a free water load. Thus, thiazides are more prone to causing hyponatremia than are loop diuretics. This is particularly so in elderly persons, who already have impaired diluting ability.


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