14 results
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... ON (UNa < 30): Hypovolemia ... failure, Cirrhosis, Nephrotic ... syndrome - ... #sodium #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Syndrome of Inappropriate ... Pain/Post-op • Neurologic ... Malignancy True hypovolemia ... Cirrhosis • Nephrotic ... syndrome • Reduced
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Syndrome of Inappropriate ... Pain/Post-op • Neurologic ... Malignancy True hypovolemia ... Cirrhosis • Nephrotic ... syndrome • Reduced
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Causes of Hyponatremia ... Cerebral salt wasting syndrome ... Stress, Drugs, Syndrome ... , UNa < 20 • Nephrotic ... syndrome, Cirrhosis
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Repeat the sodium ... liver failure • nephrotic ... syndrome • renal ... Diagnosis #Workup #Algorithm ... #Nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... failure, Cirrhosis, Nephrotic ... syndrome • Urine ... #algorithm #diagnosis ... #sodium #low #nephrology
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Diagnosis Algorithm ... CHF, cirrhosis, nephrotic ... syndrome) Euvolemic ... #diagnosis #nephrology ... #sodium
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Algorithm Isotonic ... : • Hypovolemia ... Liver Cirrhosis, Nephrotic ... Syndrome, Chronic ... #sodium #low
Hyponatremia - Differential Diagnosis Algorithm
ADH Independent:
 • Tea and Toast Syndrome, Beer Potomania - Low solute
Diagnosis Algorithm ... Tea and Toast Syndrome ... liver failure, nephrotic ... syndrome ... #causes #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Present (Uosm ≥100): Hypovolemia ... failure, Cirrhosis, Nephrotic ... syndrome) • ADH ... #nephrology