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Causes of Hypovolemia, Causes of HYPONATREMIA, (+)vasopressin release,…
Causes of Hypovolemia
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- GI Na+ loss: vomiting, diarrhoea, NG suction, external fistula
- Skin Na+ loss: excessive sweating, Burns
- Renal Na+ loss: Diuretic therapy, Mineralocorticoid deficiency, Interstitial nephritis
- Surgical cause(internal sequestration): Intestinal obstruction, Peritonitis, Pancreatitis, Crush injury
Causes of HYPONATREMIA
Hypovolemic hyponatremia
Renal sodium loss: diuretic therapy(esp. thiazides), Adrenocortical failure
GI sodium loss: vomiting, diarrhoea
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Euvolemic Hyponatremia
Primary Polydipsia, SIADH, Hypothyroidism, excessive electrolyte-free water infusion(DA sol)
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