8 results
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
Inherited Defects ... ascending limb Gitelman ... cell epithelial sodium ... of epithelial sodium ... Epithelial #Inherited #Defects
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
• Euvolemic (Low ... insipidus (central or nephrogenic ... Hypervolemic: Conn syndrome ... , Cushing syndrome ... Algorithm #nephrology #sodium
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
- Gitelman ... syndrome - ... Genetic defects ... Differential #Diagnosis #Low ... Magnesium #Table #Classification
Gitelman Syndrome Overview

What?
• Inherited (AR) hypokalemic salt-losing tubulopathies affecting the thiazide-sensitive sodium chloride cotransporter
• Gitelman's syndrome
Gitelman Syndrome ... thiazide-sensitive sodium ... thiazide-sensitive sodium ... alkalosis • Normal or low ... tachycardia • Seizures
Hyponatremia (<135 mEq/L) is a common electrolyte abnormality caused by an excess of total body water
Hyponatremia (<135 ... asymptomatic to seizures ... the hypothalamus detect ... stimulated in states of low ... activated in states of low
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
LV failure - Low ... - Compartment syndrome ... B3: Hereditary Defects ... myopathies - Defects ... #typea #typeb #classification
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
vasculitis) - Affects ... VASCULITIS: • Behçet Syndrome ... • Cogan Syndrome ... • Complement (Low ... #rheumatology #classification
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
Hereditary defects ... the epithelial sodium ... Drug-associated: heparin, low-molecular-weight ... antiphospholipid syndrome ... High #Potassium #Classification