12 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... water Extrarenal hypotonic ... perspiration Renal ... Diagnosis #Causes #nephrology ... #sodium #high
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... Urologic irrigants Hypotonic ... Primary polydipsia, Low ... Algorithm #diagnosis #sodium ... #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Sodium loss (diuretics ... can be high or low ... Primary polydipsia), Low ... differential #diagnosis #table ... #sodium #nephrology
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
, Recent TURP Hypotonic ... Syndrome, Chronic Renal ... Hypothyroidism Hypertonic ... diagnosis #causes #nephrology ... #sodium #low
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Uric Acid - Low ... High Uric Acid → renal ... Diagnosis #Algorithm #nephrology ... #sodium #low #uricacid
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... Hypothyroidism, Low ... SatyaPatelMD #Volume #Hyponatremia ... algorithm #diagnosis #sodium ... #low #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Causes of Hypernatremia ... water loss, Serum Sodium ... 300 mmol/kg • Hypertonic ... mannitol, glucosuria Low ... #Nephrology #Differential
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
mOsm/kg - Implies renal ... • Euvolemic (Low ... , Ingestion Renal ... Workup #Algorithm #nephrology ... #sodium
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
• Metabolic alkalosis ... and euvolemic hyponatremia ... Excretion #Diuresis #Nephrology ... #Pharmacology # ... Medications #Table
Citrate Anticoagulation Toxicity

Hypernatremia (HyperNa):
 - Citrate solutions may have ↑ sodium content and should be paired
Anticoagulation Toxicity Hypernatremia ... solutions may have ↑ sodium ... dysfunction or low ... metabolism Metabolic alkalosis ... Toxicity #toxicology #nephrology