28 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... perspiration Renal ... insipidus • Nephrogenic ... Differential #Diagnosis #Causes ... #nephrology #sodium
Etiologies of Hypernatremia - Differential Diagnosis
GI losses / Insensible losses
Sodium Overload
Transcellular Movement of Water
Central Diabetes Insipidus
Etiologies of Hypernatremia ... Insensible losses Sodium ... congenital disorders Nephrogenic ... diseases (e.g. ... Diagnosis #Table #Causes
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Workup Algorithm 1) ... , Ingestion Renal ... insipidus (central or nephrogenic ... Workup #Algorithm #nephrology ... #sodium
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
, Dehydration: neurologic ... disease, water ... Diabetes Insipidus: neurogenic ... Diagnosis #Treatment #management ... #nephrology #sodium
Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
• Lung cancer ... Hypoparathyroidism - Type 1 ... PRA • ↓ Serum sodium ... ACTH • ↓ Serum sodium ... tests: - Check sodium
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Causes of Chronic ... hydronephrosis on U/S) • Reflux ... Constipation • Prostate cancer ... KidneyDisease #Nephrology ... Diagnosis #Algorithm #Causes
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... +K / serum Na >1 ... Sodium loss (diuretics ... Hypothyroidism, Adrenal ... #nephrology
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
is usually caused ... 1) Is it hypotonic ... vaptans (HF/liver disease ... Diagnosis #Treatment #management ... #nephrology #sodium
Adrenal Insufficiency - Diagnosis and Management Summary
Primary Adrenal Insufficiency:
Most Common Cause in the US: Autoimmune Adrenalitis
Other
Diagnosis and Management ... or metastatic disease ... secondary AI, hyponatremia ... PEARLS: 1. ... ACTH STIM TEST: 1.
Management of SIADH
Treat underlying cause:
 • Causes can include pain, primary lung pathology, post-operative phenomenon, medications,
Management of SIADH ... restriction: • Restrict 1 ... promoting passive sodium ... #hyponatremia # ... nephrology #treatment