13 results
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
Hypokalemia ... - Renal FE PO4 ... • Osmotic Diuresis ... Acetazolamide and Thiazide Diuretics ... #Algorithm #endocrinology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Sodium loss (diuretics ... diuresis can be ... diuresis) RAAS ... syndrome) • ADH ... #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
losses, Diuretic ... and metabolic alkalosis ... Ketonuria, Osmotic diuresis ... , UNa < 20 • Nephrotic ... #nephrology
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
• Hypovolemia: Diuretics ... Syndrome, Chronic ... Renal Failure, ... #diagnosis #causes ... #low
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Algorithm Hypertonic ... syndrome - ... , Medications (diuretics ... #Algorithm #diagnosis ... #sodium #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
• Metabolic alkalosis ... • Diagnosis of ... syndromeHyponatremia ... Renal #Excretion ... #Diuresis #Nephrology
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
Diagnosis Algorithm ... Transcellular Shift: • Alkalosis ... • Refeeding syndrome ... • Discontinued diuretic ... #Algorithm #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Algorithm Syndrome ... GI losses • Renal ... especially thiazide diuretics ... GFR, AKI/CRF Hormonal ... #Diagnosis #Algorithm
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Algorithm Syndrome ... GI losses • Renal ... especially thiazide diuretics ... GFR, AKI/CRF Hormonal ... #Diagnosis #Algorithm
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Urine Fractional Excretion ... Glucose, Acute resp. alkalosis ... FEPO4 ≥ 5% - Renal ... Inh., Osmotic diuresis ... Workup #phosphate #nephrology