40 results
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Hyponatremia - Diagnostic ... Step 2: Check Uosm ... tests Step 5: If SIADH ... DrEricStrong #Hyponatremia ... #Diagnosis #Workup
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Hyponatremia Diagnosis ... Algorithm UOsm ... Inappropriate - Consider: SIADH ... Cortisol deficiency UOsm ... @NephroMD #hyponatremia
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Modified Hyponatremia ... Algorithm Hypertonic Hyponatremia ... : • ADH ON (UOsm ... OFF (UNa > 30): SIADH ... wasting • ADH OFF (UOsm
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Approach to Hypotonic Hyponatremia ... case of hypotonic hyponatremia ... restriction alone in SIADH ... ≥100): SIADH, Renal ... Physiologic #Hypotonic #Hyponatremia
Hypo-osmolar Hypotonic HypoNatremia Algorithm (Serum Na+ < 135 meq/L, serum Osm < 275 mosm/kg)
Assess Volume Status,
Hypo-osmolar Hypotonic HypoNatremia ... 135 meq/L, serum Osm ... < 275 mosm/kg) ... Urine Na, Urine Osm ... #Hyponatremia
Classification, Differential Diagnosis, and Features of Hyponatremia According to Volume Status 

Hypervolemic hypernatremia 
 - CHF
and Features of Hyponatremia ... Hypervolemic hypernatremia ... Normovolemic hyponatremia ... - Drugs - SIADH ... Diarrhea #Hyponatremia
Hypernatremia - Diagnostic Evaluation Algorithm
Step 1: Consider history. Most patients presenting with hypernatremia are either very
Hypernatremia - ... presenting with hypernatremia ... Step 2: Check Uosm ... using initial Uosm ... #Diagnosis #Workup
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... and Workup Step ... mmol/L - true hyponatremia ... EUVOLEMIC • SIADH ... #Diagnosis #Workup
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... ) Euvolemic • UOsm ... Toast Diet • UOsm ... , SSRIs) - SIADH ... UnremarkableLab #Hyponatremia
Hyponatremia Treatment Algorithm

CHF, Cirrhosis - Fluid restriction
SIADH - Fluid restriction
 - Consider salt tablets if etiology
Hyponatremia Treatment ... Fluid restriction SIADH ... reversible - If Uosm ... DrEricStrong #Hyponatremia