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diagnosis nephrology differential table adh causes chf clinical criticalcare ebv foamed heartfailure hypernatremia hypotonic icu lazy management osmolality pathophysiology pharmacology
Cerebral Salt Wasting vs SIADH - Pathophysiology 1) Neurological event 2) Sodium loss from tubules 3) Naturiesis →
Cerebral Salt Wasting ... Neurological event 2) Sodium ... → Increased urine ... diagnosis #nephrology #hyponatremia ... #comparison
Volume Based Approach to Hyponatremia Hypovolemic, Serum uric acid >4 • Urine Na <20: Extra-renal losses •
Hypovolemic, Serum ... Renal losses, Cerebral ... uric acid <4 • SIADH ... #algorithm #diagnosis ... #sodium #low #nephrology
True Hyponatremia Differential Algorithm Instead (or in addition) of volume status examination, check urine sodium and serum
Differential Algorithm ... sodium low, uric ... acid high in hypovolemic ... - Urine sodium ... and uric acid low
Modified Hyponatremia Algorithm Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants Hypotonic Hyponatremia: • ADH ON (UOsm > 100):
ON (UNa < 30): Hypovolemia ... OFF (UNa > 30): SIADH ... Reset osmostat, Cerebral ... Primary polydipsia, Low ... #sodium #nephrology
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... Diagnosis Algorithm ... Sodium 4) Serum ... Uric Acid → SIADH ... #low #uricacid
Physiologic Approach to Hypotonic Hyponatremia The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Urine Na+K / serum ... , Renal Sodium loss ... can be high or low ... Insufficiency, Cerebral
Hyponatremia - Differential Algorithm Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP Hypotonic Hyponatremia: • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Algorithm Isotonic ... : • Hypovolemia ... • Euvolemia: SIADH ... causes #nephrology #sodium ... #low
Hypernatremia - Differential Diagnosis Workup Algorithm 1) Check Urine Osmolality: > 600 mOsm/kg - Implies extrarenal mechanism
Diagnosis Workup Algorithm ... 1) Check Urine ... : • Hypovolemic ... • Euvolemic (Low ... #nephrology #sodium
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
body water in comparison ... consequence of cerebral ... Measured urine sodium ... #RAAS #Hypovolemia ... EBV #potomania #SIADH
A lazy man's classification of hyponatremia There are two possible approaches to the diagnosis of hyponatremia: .
serum osmolality, urine ... osmolality and urinary sodium ... the patient has SIADH ... or cerebral salt ... #Algorithm #Differential
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