10 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... Repeat the sodium ... Assess volume status ... EUVOLEMIC • SIADH ... Diagnosis #Workup #Algorithm
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
to Hyponatremia ... uric acid <4 • SIADH ... #Hyponatremia # ... algorithm #diagnosis ... #sodium #low #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
algorithm Urine ... restriction alone in SIADH ... Present (Uosm ≥100): SIADH ... , Renal Sodium loss ... diagnosis #table #sodium
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... Diagnosis Algorithm ... Hypovolemic - Give volume ... , SSRIs) - SIADH ... diagnosis #nephrology #sodium
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... OFF (UNa > 30): SIADH ... polydipsia, Low solute ... #Algorithm #diagnosis ... #sodium #nephrology
Hyponatremia Diagnosis Algorithm
UOsm ≥ POsm - Vasopressin-Dependent
 • UNa < 20 mEq/L - Appropriate (↓ EABV)
Hyponatremia Diagnosis ... Algorithm UOsm ... Appropriate (↓ EABV ... Inappropriate - Consider: SIADH ... polydipsia, Low solute
A lazy man's classification of hyponatremia
There are two possible approaches to the diagnosis of hyponatremia: .
A lazy man's classification ... of hyponatremia ... osmolality and urinary sodium ... the patient has SIADH ... #Algorithm #Differential
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
Hyponatremia (<135 ... True hyponatremia ... #hyponatremia #ADH ... #Hypovolemia #EBV ... #potomania #SIADH
Management of Hyponatremia
Hypertonic Saline - Only indicated if patient has severe symptoms + Na < 125
Give
Management of Hyponatremia ... Normalizes in SIADH ... • IF SIADH — ... #Management #algorithm ... #treatment #sodium
Enema Selection / Comparison Table

A short guide for choosing which enema to order depending on the
when treating constipation ... Sodium Phosphate ... Contraindications: SIADH ... , Hyponatremia ... Gastroenterology #Constipation