26 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... mmol/L - true hyponatremia ... HYPERVOLEMIC • CHF ... renal failure #Hypernatremia ... #Diagnosis #Workup
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
True Hyponatremia ... and hypervolemic hyponatremia ... in euvolemic hyponatremia ... kidney_boy #True #Hyponatremia ... #Diagnosis #Nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Hypernatremia - ... Workup Algorithm ... Extrarenal Hypernatremia ... MatthewHoMD #Hypernatremia ... #Workup #Algorithm
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Causes of Hypernatremia ... Algorithm Hypernatremia ... mannitol, glucosuria Low ... Hyperventilation #Hypernatremia ... #Algorithm #Causes
Causes of Altered Level of Consciousness GCS < 7 - Differential Diagnosis Algorithm

Brain Involvement - Hemispheric
Causes of Altered ... Algorithm Brain ... Metabolic Acidosis • Hypernatremia ... deficiency • Hyponatremia ... #Algorithm #Causes
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Diagnosis Algorithm ... Osmolarity 2) Urine ... Uric Acid - Low ... Rachel Stern MD #Hyponatremia
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Hyponatremia - Diagnostic ... Check Uosm and/or Urine ... considered likely, the cause ... DrEricStrong #Hyponatremia ... #Diagnosis #Workup
Diagnostic Approach to Hyponatremia
Box A:
 • Normo/hyperosmolar Hyponatremia: Glucose, Mannitol, Glycine, Contrast media, Maltose
 • Pseudohyponatremia:
to Hyponatremia ... Normo/hyperosmolar Hyponatremia ... Wilkinsonjonny #Hyponatremia ... #Diagnosis #Algorithm ... #workup
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine ... osmole intake #Hyponatremia ... #Algorithm #Causes
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine ... osmole intake #Hyponatremia ... #Algorithm #Causes