26 results
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
limb Gitelman syndrome ... tubule Liddle syndrome ... cell epithelial sodium ... of epithelial sodium ... Kidney #Nephrology #Diagnosis
Mechanisms of nephron damage in cardiorenal syndrome
 • Increased renal interstitial pressure
 • Hypoperfusion
 • Reduced
in cardiorenal syndrome ... hypertrophy • Sodium ... release • ↓ Cl ... #cardiorenal #syndrome ... #Mechanisms #pathophysiology
Gitelman Syndrome Pathophysiology
Gitelman Syndrome is a rare autosomal recessive salt-losing tubulopathy with a prevalence of 1-
Pathophysiology ... autosomal recessive salt-losing ... thiazide-sensitive sodium-chloride ... #Pathophysiology ... #nephrology #diagnosis
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Cerebral Salt Wasting ... vs SIADH - Pathophysiology ... Neurological event 2) Sodium ... SaltWasting #SIADH #Pathophysiology ... #diagnosis #nephrology
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
(Heparin) • Sodium-channel ... • Exogenous (KCL ... #differential #diagnosis ... #pathophysiology
Liver Chemistry Tests - AST, ALT, Alkaline Phosphatase and Bilirubin Metabolism
AST and ALT:
 • AST: liver
Laboratory #Metabolism #ASTALT ... #AlkPhos #Bilirubin ... #Hepatology #Pathophysiology ... #Diagnosis #LFTs
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Cirrhosis, Nephrotic syndrome ... osmostat, Cerebral salt ... Hyponatremia #Algorithm #diagnosis ... #sodium #nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
- Differential Diagnosis ... Hypervolemic (Excess salt ... , Cushing syndrome ... #Differential #Diagnosis ... Algorithm #nephrology #sodium
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
- Differential Diagnosis ... - Cirrhosis Syndrome ... - Cerebral salt ... #Differential #Diagnosis ... Table #Causes #Sodium
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
losses, Cerebral salt ... Cirrhosis, Nephrotic syndrome ... Hyponatremia #algorithm #diagnosis ... #sodium #low #nephrology