14 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
and Workup Step ... Repeat the sodium ... EUVOLEMIC • SIADH ... HYPERVOLEMIC • CHF ... #Algorithm #Nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... normal volume-based algorithm ... Urine Na+K / serum ... restriction alone in SIADH ... , Renal Sodium loss
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Diagnosis Algorithm ... treat underlying cause ... (CHF, cirrhosis ... , SSRIs) - SIADH ... diagnosis #nephrology #sodium
Hyponatremia - Diagnostic Evaluation Algorithm

Step 1: Consider whether Posm may actually be normal or elevated
Step 2:
Evaluation Algorithm ... Check Uosm and/or Urine ... tests Step 5: If SIADH ... considered likely, the cause ... #Diagnosis #Workup
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Euvolemic; no physiologic ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine ... #Causes
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Euvolemic; no physiologic ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine ... #Causes
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
usually caused by ... 3 questions to work ... through a physiologic ... Measure urine osmolality ... management #nephrology #sodium
Management of SIADH
Treat underlying cause:
 • Causes can include pain, primary lung pathology, post-operative phenomenon, medications,
Management of SIADH ... promoting passive sodium ... Saline: • If Urine ... #Management #hyponatremia ... #nephrology #treatment
SIADH Treatment Options
1. Treat underlying cause of SIADH: Pain, Primary lung pathology, Post-operative phenomenon, Medications, Basically
SIADH Treatment ... promoting passive sodium ... 0.9% NS • If Urine ... #Management #hyponatremia ... #nephrology #treatment
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
among the possible causes ... in blood urea causes ... Another important physiological ... Measured urine sodium ... EBV #potomania #SIADH