21 results
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Algorithm 1) Check Urine ... • Euvolemic (Low ... • Hypovolemic: Diuretics ... Workup #Algorithm #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
- Differential Diagnosis ... Urine Cl-: Vomiting ... Cl intake, Diuretics ... Cl-: Diuretics, ... #Algorithm #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
- Differential Diagnosis ... Urine Cl-: Vomiting ... Cl intake, Diuretics ... Cl-: Diuretics, ... #Algorithm #Nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
- Differential Diagnosis ... administration • Osmotic diuresis ... mannitol, glucosuria Low ... Urine Osmolality ... #Nephrology #Differential
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
volume-based algorithm Urine ... can be high or low ... Primary polydipsia), Low ... #differential #diagnosis ... table #sodium #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
disequilibrium syndrome • Diagnosis ... Inhibitors of Na+K+2Cl ... Tolvaptan) • Treatment ... and euvolemic hyponatremia ... #Nephrology #Pharmacology
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
Urine Cl - Non-reabsorbable ... Cl - Loop diuretics ... , Thiazide diuretics ... differential #algorithm #diagnosis ... #nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential Diagnosis ... a.k.a. osmotic diuresis ... • Central Dl (Low ... , Infiltrative diseases ... #Causes #nephrology
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
history, exam, and urine ... DI; high dilute urine ... Dehydration: neurologic disease ... unavailable 2) Osmotic Diuresis ... #nephrology #sodium
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
Hyponatremia - Diagnosis ... Measure urine osmolality ... vaptans (HF/liver disease ... #Differential #Diagnosis ... #nephrology #sodium