11 results
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 ... , Renal Sodium loss ... , Hypervolemia with
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Repeat the sodium ... HYPOVOLEMIC • ... volume loss - diuretics ... EUVOLEMIC • SIADH ... HYPERVOLEMIC • CHF
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
: Diuretics/Nephropathies ... • Euvolemia: SIADH ... Alcohol MH/CCF ... #diagnosis #causes ... #nephrology #sodium
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hypovolemic - Give ... treat underlying cause ... (CHF, cirrhosis ... , SSRIs) - SIADH ... diagnosis #nephrology #sodium
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Malignancy True hypovolemia ... especially thiazide diuretics ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Malignancy True hypovolemia ... especially thiazide diuretics ... Reduced GFR, AKI/CRF ... Hypo-osmolar urine
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
release of anti-diuretic ... Measured urine sodium ... #RAAS #Hypovolemia ... #EBV #potomania ... #SIADH #Thiazides
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
usually caused by ... Measure urine osmolality ... volume status (EABV ... include vaptans (HF ... management #nephrology #sodium
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
Hyponatremia Differential Diagnosis Algorithm in Cancer
UOsm ≥ 100 mOsm/kg = Urine is inappropriately concentrated for hypotonic
Diagnosis Algorithm ... in Cancer UOsm ... 100 mOsm/kg = Urine ... appropriate • Hypovolemia ... inappropriate • SIAD