2195 results
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Diagnosis Algorithm UOsm ... ≥ POsm - Vasopressin-Dependent ... Cortisol deficiency UOsm ... < POsm - Vasopressin-independent ... hyponatremia #diagnosis #differential
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
with polyuria UOsm ... nephrogenic) UOsm ... 2 × (Na + K) = UOsm ... × (Na + K) << UOsm ... #polyuria #differential
Pathophysiology Based Approach to Hyponatremia - Diagnostic Algorithm

Not the "classic" Volume based approach. 

#Hyponatremia #Algorithm #Pathophysiology
Pathophysiology #Diagnosis #Differential ... #Nephrology #UOsm
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
• ADH Present (Uosm ... be high or low Uosm ... ADH Not Present (Uosm ... • ADH Present (Uosm ... #Hyponatremia #differential
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... ) Euvolemic • UOsm ... Toast Diet • UOsm ... #Hyponatremia #Differential
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
of Polyuria - Differential ... Loss - DDAVP -> Uosm ... Insipidus - DDAVP -> Uosm ... Polyuria #Nephrology #Differential
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... #2 - Assess the Uosm
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Hyponatremia - Differential ... Hypo-osmolar urine - Uosm ... Hyponatremia #Nephrology #Differential
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Hyponatremia - Differential ... Hypo-osmolar urine - Uosm ... Hyponatremia #Nephrology #Differential
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Diuresis (Urine Osm ... <100 mOsm/kg) ... 100-200 mOsm/kg ... #Polyuria #Differential