9 results
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
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 - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
usually caused by ... 3 questions to work ... Measure urine osmolality ... volume status (EABV ... 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
Hyponatremia (<135 ... and urine osmolality ... Measured urine sodium ... #Hypovolemia #EBV ... #potomania #SIADH
Management of Hyponatremia
Hypertonic Saline - Only indicated if patient has severe symptoms + Na < 125
Give
Management of Hyponatremia ... • IF SIADH — ... look for cause ... #Management #algorithm ... #treatment #sodium
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
hypothalamic thirst center ... Pseudohyponatremia, SIADH ... intoxication Initial Workup ... Osm, Serum Sodium ... , Urine Sodium
Hyponatremia Differential Diagnosis Algorithm in Cancer
UOsm ≥ 100 mOsm/kg = Urine is inappropriately concentrated for hypotonic
Hyponatremia Differential ... Diagnosis Algorithm ... in Cancer UOsm ... 100 mOsm/kg = Urine ... inappropriate • SIAD