36 results
Treatment of hyperkalemia via kaliuresis 
step 1 = volume resuscitation if hypovolemic
step 2 = consider fludrocortisone
step
fludrocortisone step 3 = diuretic ... determine response to diuretic ... hyperkalemia #kaliuresis #management ... criticalcare #treatment #diuretics ... #diuresis #nephrology
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
concentrating defect: • Diuretics ... • Osmotic diuresis ... • Central diabetes ... • Nephrogenic diabetes ... Diagnosis #Causes #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
irrigation • Management ... • Nephrogenic diabetes ... Lithium-induced nephrogenic diabetes ... DDAVP) • Central diabetes ... #Nephrology #Pharmacology
Polyuria - Differential Diagnosis Algorithm
Urine Output > 3L /day
Water Diuresis (Urine Osm <100 mOsm/kg)
 • Primary
3L /day Water Diuresis ... Polydipsia • Central Diabetes ... • Nephrogenic Diabetes ... Insipidus Mixed Diuresis ... Algorithm #causes #nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
a.k.a. osmotic diuresis ... : Conventional diuretics ... Poorly controlled diabetes ... Diabetes Insipidus ... Diagnosis #Causes #nephrology
Causes of Hypokalemia
Transcellular Shifts:
 - Alkalosis, Increased plasma insulin (treatment of diabetic ketoacidosis), ß-Adrenergic agonists, Hypokalemic
(treatment of diabetic ... thiazide-like diuretics ... Postobstructive diuresis ... , Osmotic diuresis ... differential #diagnosis #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
• Hypovolemic: Diuretics ... osmotic (solute) diuresis ... • Euvolemic: Diabetes ... Workup #Algorithm #nephrology
Diuresis in Critical Care - Achieving a Negative Fluid Balance
Advantages Of A Negative Fluid Balance:
 •
Diuresis in Critical ... Start with LOOP DIURETICS ... , address diuretic ... Early nephrologv ... Fluid #Balance #management
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
/min) Osmotic Diuresis ... (Uncontrolled Diabetes ... • Central Diabetes ... • Nephrogenic Diabetes ... #Polyuria #Nephrology
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Diagnosis Algorithm - Diabetes ... Hypernatremia #Management ... Algorithm #Sodium #nephrology