19 results
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... Diagnosis Algorithm Hypovolemic ... treat underlying cause ... Pulmonary Diseases ... , SSRIs) - SIADH
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Based Approach to Hyponatremia ... Hypovolemic, Serum ... uric acid <4 • SIADH ... Glucocorticoid deficiency, Primary ... algorithm #diagnosis #sodium
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... volume-based algorithm Urine ... , Renal Sodium loss ... water intake (Primary ... #differential #
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
EABV) - Consider: Hypovolemia ... Inappropriate - Consider: SIADH ... Vasopressin-independent - Consider: Primary ... #diagnosis #differential ... #algorithm #causes
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... 1) Check Urine ... : • Hypovolemic ... Algorithm #nephrology #sodium
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... • Drugs • Pulmonary ... Malignancy True hypovolemia ... Hypo-osmolar urine ... suppression • Primary
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... • Drugs • Pulmonary ... Malignancy True hypovolemia ... Hypo-osmolar urine ... suppression • Primary
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
Hyponatremia - Differential ... ADH secretion (SIADH ... hemorrhage) - Pulmonary ... renal failure - Primary ... #Sodium
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Hyponatremia - Differential ... : • Hypovolemia ... • Euvolemia: SIADH ... Algorithm #diagnosis #causes ... #nephrology #sodium
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
helps to differentiate ... hypervolemic, hypovolemic ... Measured urine sodium ... #RAAS #Hypovolemia ... EBV #potomania #SIADH