Low Sodium – Hyponatraemia

Hypervolaemia: Nephrotic & CCF & EF & Liver failure.

Euvolaemia + hi urine osmol = SIADH.
Euvolaemia + lo urine osmol = SubTHN; Glucocorticoid lack; H2O Overload.

Hypovolaemia + low urine Na under 20 => GI/Burns/Pancreatitis i.e. Vom; Diarr; Burns; Pancreatis; SBO.

Hypovolaemia + high urine Na over 20 => RENAL LOSSES i.e. kidney loses sodium into urine.
Renal losses i.e. Addison’s; ARF/ATN; DIURETICS.

Let’s approach it another way: Diuretics cause – low Na, low volume status, but HIGH urinary  sodium. Okay…

 

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s