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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 ... in SIADH RAAS ... : Hypovolemia, Hypervolemia ... differential #diagnosis #table
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... ON (UNa < 30): ... SIADH, Medications ... Primary polydipsia, Low ... #sodium #nephrology
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
stimulated in states of low ... Measured urine sodium ... #hyponatremia #ADH ... #EBV #potomania ... #SIADH #Thiazides
Management of SIADH
Treat underlying cause:
 • Causes can include pain, primary lung pathology, post-operative phenomenon, medications,
promoting passive sodium ... colon 0.9% Normal Saline ... : • If Urine osmolality ... < 538 AND UNa + ... #nephrology #treatment
Hyperkalemia - Diagnosis and Management - GrepMed Handbook

S/Sx: Most pts asymptomatic. Weakness, cramping, nausea, paresthesias, palpitations,
K-sparing diuretics, Saline ... lysis) ± Urine ... Lytes: UNa < 20 ... Elimination (see Table ... acidosis) • Low