Hyponatremia Flashcards
1
Q
What tests are important in diagnosis of SIADH?
A
Serum Na low
Urine Na high
Serum osmolarity low
Urine osmolarity high
2
Q
What are some causes of true Na loss?
A
D and V
Diuretics and renal failure
Peritonitis
Burns
3
Q
Give some symptoms of central pontine myelinolysis.
A
Dysarthria Diplopia Dysphagia Loss consciousness Acute paralysis
Locked in syndrome
4
Q
How do you calculate osmolality?
A
2Na + glucose + urea a
5
Q
Give some causes of cerebral salt wasting syndrome.
A
Brain injury (trauma)
Aneursymal sybarachnoid haemorrhage
Intracranial surgery
6
Q
Urine Na> 20mmol/ L + hypervolemic states indicates what?
A
Renal failure.
