310 results
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Diuresis (Urine Osm ... <100 mOsm/kg) ... Central Diabetes Insipidus ... Nephrogenic Diabetes Insipidus ... 100-200 mOsm/kg
Central vs Nephrogenic Diabetes Insipidus - Desmopressin Challenge
Give desmopressin (intranasal, SQ, IV) and monitor UOsm every
Nephrogenic Diabetes Insipidus ... IV) and monitor UOsm ... • No Rise in UOsm ... < 45% rise in UOsm ... Nephrogenic #Diabetes #Insipidus
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Algorithm - Diabetes Insipidus ... #2 - Assess the Uosm ... Sodium #nephrology #insipidus
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
with polyuria UOsm ... polydipsia • Diabetes insipidus ... 2 × (Na + K) = UOsm ... × (Na + K) << UOsm ... diagnosis #nephrology #Uosm
Diabetes Insipidus vs Syndrome of Inappropriate ADH (SIADH) - Comparison Table

Diabetes Insipidus - Inadequate ADH
SIADH -
Diabetes Insipidus ... Table Diabetes Insipidus ... #Diabetes #Insipidus ... Pathophysiology #Signs
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
Loss - DDAVP -> Uosm ... Central Diabetes Insipidus ... - DDAVP -> Uosm ... Nephrogenic Diabetes Insipidus
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
osmolality > 300 mosm ... osmolality < 100 mosm ... kg • Diabetes Insipidus
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Osmolality: > 600 mOsm ... mechanism ≤ 600 mOsm ... Euvolemic: Diabetes insipidus
Increased Urination - Differential Diagnosis Framework - Increased Volume / Frequency
 • Increased osmotic load (Increased
Increased urine osm ... usually low urine osm ... resistance (Diabetes insipidus ... intake (low urine osm
Corrigan's Sign in Severe Aortic Regurgitation

- Dr. Andres S. Kohan https://twitter.com/KohanAndres

#Corrigans #AorticRegurgitation #Pulse #PhysicalExam #Video #Neck
Corrigan's Sign ... #PhysicalExam #Video ... #Neck #Signs #