14 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Hypernatremia - Differential ... perspiration Renal ... • Osmotic diuresis ... diabetes insipidus ... Diagnosis #Causes #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
Regulating Renal ... insipidusKidney ... Tolvaptan) • Treatment ... #Renal #Excretion ... #Diuresis #Nephrology
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
Polyuria - Differential ... Insipidus • Nephrogenic ... Diabetes Insipidus ... Dl • Chronic Renal ... Algorithm #causes #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
of Polyuria - Differential ... /min) Osmotic Diuresis ... Recovery from Acute Renal ... Insipidus - DDAVP ... #Nephrology #Differential
Classification of Diabetes Insipidus

Central or neurogenic diabetes insipidus:
 - Congenital - Structural malformations affecting the hypothalamus
Acquired - Primary renal ... Treatment is aimed ... at the psychiatric ... #Diabetes #Insipidus ... #Diagnosis #Differential
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Hypernatremia - Differential ... mOsm/kg - Implies renal ... , Ingestion Renal ... • Euvolemic: Diabetes ... insipidus (central
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
of Polyuria - Differential ... a.k.a. osmotic diuresis ... : Conventional diuretics ... Diabetes Insipidus ... Nephrogenic DI (Renal
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
Inherited Defects in Kidney ... Epithelial Cells Renal ... ATPase Nephrogenic diabetes ... insipidus - Vasopressin ... #Differential #
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
plasma insulin (treatment ... of diabetic ketoacidosis ... Villous adenoma Renal ... chewing tobacco, Renal ... Hypokalemia #Causes #differential
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
The differential ... , Dehydration: neurologic ... unavailable 2) Osmotic Diuresis ... post-obstructive 3) Diabetes ... Insipidus: neurogenic