HYPONATREMIA-HYPOVOLUMIC HYPONATREMIA CAUSES

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SUMMARY

1. Diuretics
2. Gl losses (vomiting and diarrhea)
3. Third spacing of fluid

4. Adrenal insufficiency (Addison disease): low aldosterone causes renal Na+ wasting, decreased K+ & H+ excretion, resulting in hyponatremia, hypovolemia, hyperkalemia & metabolic acidosis.


Reference(s)

Wilkinson, I. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].