Sodium Disorders

Question 1

HypoNa, 🔻serum osm, normal urine osm
A. SIADH
B. DI
C. Psychogenic polydipsia
D. Volume overload

Answer 1

D

SIADH: concentrated urine
DI: diluted urine
Psychogenic: Diluted urine

Question 2

Hypovolemic HypoNa ddx:

Answer 2

🔹 urine Na 🔹
>30: renal loss (diuretics)
<30: Extrarenal (vomiting, dehydration)

Question 3

Euvolemic HypoNa ddx:

Answer 3

🔹 urine Osm 🔹
<100: diluted (polydipsia)
>100: dark (SIADH)

Question 4

Hypervolemic HypoNa ddx:

Answer 4

🔹 urine Na 🔹
>30: renal loss (CKD, nephrotic)
<30: Extrarenal ( Volume overload- CHF, cirrhosis, hyperaldosteronism)

Question 5

Profound HypoNa <125 or
HypoNa + CNS symptoms

Answer 5

HTS

Question 6

In the treatment of HypoNa with HTS
Slow correction at rate […] to prevent […]

Answer 6

Rate: <8-10 per day
Osmotic demyelination syndrome