12 results
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Diagnosis Algorithm ... Sodium 4) Serum ... Low Uric Acid → SIADH ... #Differential #
A lazy man's classification of hyponatremia
There are two possible approaches to the diagnosis of hyponatremia: .
of hyponatremia ... serum osmolality, urine ... osmolality and urinary sodium ... the patient has SIADH ... #Algorithm #Differential
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
- Differential ... Diagnosis Algorithm ... water loss, Serum Sodium ... 145 mmol/L High Urine ... kg • Diabetes Insipidus
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... Diagnosis Algorithm ... underlying cause (CHF ... , SSRIs) - SIADH ... diagnosis #nephrology #sodium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... 1) Check Urine ... Euvolemic: Diabetes insipidus ... #nephrology #sodium
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Urine Na+K / serum ... restriction alone in SIADH ... , Renal Sodium loss ... #differential #
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
Differential Diagnosis ... : Diabetes Insipidus ... Pseudohyponatremia, SIADH ... Osm, Serum Sodium ... , Urine Sodium
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Hyponatremia - Differential ... Algorithm Isotonic ... • Euvolemia: SIADH ... Alcohol MH/CCF ... causes #nephrology #sodium
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
Differential Diagnosis ... history, exam, and urine ... DI; high dilute urine ... post-obstructive 3) Diabetes Insipidus ... management #nephrology #sodium
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
approach to the differential ... Measure urine osmolality ... include vaptans (HF ... #Differential # ... management #nephrology #sodium