Urine Osmolality Flashcards
1
Q
Causes of HYPOVOLEMIC hypotonic hyponatremia
A
More Na loss than water loss as occurs on:
- Diarrhea
- Vomiting
- Malnutrition
- Excessive Sweating
2
Q
Causes of EUVOLEMIC hypotonic hyponatremia
A
Water gained with stable Na levels as occurs in:
- SIADH
- Thyroid disease
- Primary polydipsia
3
Q
Causes of HYPERVOLEMIC hypotonic hponatremia
A
Gain of both water and Na but water more than Na as occurs in
- CHF
- CIRRHOSIS
3Renal failure
4
Q
Hypertonic hyponatremia
A
> 295
Caused by:
Mannitol
Glycerol
Hyperglycemia
5
Q
Isotonic hyponatremia
A
280-295
Psyedohyponatremia—> due to high TG, PROTEINS
6
Q
Hypotonic hyponatremia
A
<280
Increased fluid intake
Decrease solute intake
Hypothyroid
Adrenal insufficiency
Renal disease
CHF
Cirrhosis
