25 results
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Causes of Hypernatremia ... mannitol, glucosuria Low ... consciousness • No access ... #Nephrology #Differential ... #Causes
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Hyponatremia Diagnosis ... Algorithm UOsm ... Primary polydipsia, Low ... #differential #algorithm ... #causes #nephrology
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... NORMAL PLASMA OSMOLALITY ... Assess volume status ... Diagnosis #Workup #Algorithm ... #Nephrology
Hyponatremia - Differential Diagnosis Algorithm
ADH Independent:
 • Tea and Toast Syndrome, Beer Potomania - Low solute
Hyponatremia - Differential ... Diagnosis Algorithm ... Beer Potomania - Low ... thecurbsiders #Hyponatremia ... #causes #nephrology
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Hyponatremia - Diagnostic ... Evaluation Algorithm ... may actually be normal ... Gravity Step 3: Assess ... considered likely, the cause
Causes of Seizures - Differential Diagnosis Algorithm
Unprovoked - Epilepsy:
 • Focal: Simple, Complex
 • Generalized: Absence,
Causes of Seizures ... Differential Diagnosis Algorithm ... Encephalitis, Brain Abscess ... Hyperglycemia, Hyponatremia ... #Causes #neurology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup Algorithm ... • Euvolemic (Low ... thirst, Lack of access ... Diagnosis #Workup #Algorithm ... #nephrology #sodium
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Differential Diagnosis Algorithm ... Weakness, fatigue, nausea ... , hypotension, hyponatremia ... insufficiency • Low ... or normal baseline
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Differential Diagnosis Algorithm ... Hyperplasia • Normal ... Al, Normal R - ... Differential #Diagnosis #Algorithm ... #nephrology #causes
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Differential Diagnosis Algorithm ... Extra-renal Losses: • Normal ... Differential #Diagnosis #Algorithm ... #causes #potassium ... #low #nephrology