12 results
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Volume Based Approach ... to Hyponatremia ... Cirrhosis, Nephrotic syndrome ... algorithm #diagnosis #sodium ... #low #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based ... can be high or low ... Cirrhosis, Nephrotic syndrome ... differential #diagnosis #table ... #sodium #nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Causes of Hyponatremia ... and metabolic alkalosis ... UNa > 20: • Acute ... Cardiac failure #Hyponatremia ... Algorithm #Causes #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
mOsm/kg - Implies renal ... • Euvolemic (Low ... , Cushing syndrome ... Workup #Algorithm #nephrology ... #sodium
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
paraproteinemia, acute ... resp. alkalosis ... FEPO4 ≥ 5% - Renal ... Denosumab, Estrogen based ... Workup #phosphate #nephrology
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Appropriately Low ... , Acute Respiratory ... Alkalosis, Tumor ... inhibitor, Estrogen based ... Diagnosis #Algorithm #nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
• Normal/low ... , Gitelman syndrome ... poisoning Normal acid-base ... the excretion of sodium ... urine #Algorithm #nephrology
Hyponatremia - Differential Algorithm
Isotonic Hyponatremia: Hyperlipidemia, Hyperproteinemia, Recent TURP
Hypotonic Hyponatremia: 
 • Hypovolemia: Diuretics/Nephropathies, Vomiting, Diarrhea,
Hyponatremia - Differential ... Cirrhosis, Nephrotic Syndrome ... , Chronic Renal ... diagnosis #causes #nephrology ... #sodium #low
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Acute or chronic ... Compensation, Acute ... D-lactate (short bowel syndrome ... Diagnosis #Summary #Nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
• Metabolic alkalosis ... Torsemide) • Acute ... • Hyponatremia ... Excretion #Diuresis #Nephrology ... #Medications #Table