4 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
and Workup Step ... Repeat the sodium ... • psychogenic polydipsia ... liver failure • nephrotic ... #Algorithm #Nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... deficiency, Primary polydipsia ... failure, Cirrhosis, Nephrotic ... algorithm #diagnosis #sodium ... #low #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
algorithm Urine Na+K / serum ... : SIADH, Renal Sodium ... failure, Cirrhosis, Nephrotic ... intake (Primary polydipsia ... #nephrology
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
intoxication Initial Workup ... : Serum Osm, Urine ... Osm, Serum Sodium ... , Urine Sodium ... diagnosis #management #nephrology