L8 Renal Flashcards
Glomeruli
Structure
Permeability
network of capillaries between afferent and efferent arteriole
Permeable to water and small molecules
Impermeable to albumin and larger proteins
Interstitium formed by
collagen and blood vessels
Azotemia
What is it
What is it caused by
Elevation of blood urea nitrogen and creatinin levels due to decreased GFR
Uremia
Azotemia w/ time to develop clinical symptoms
Acute nephritic syndrome
Results from
Characterized by (4)
Results from glomerular injury Acute onset of Hematuria proteinuria azotemia (nitrogen) hypertension
Nephrotic syndrome
Heave proteinuria (3.5 grams per day)
Acute renal failure
Acute onset of azotemia with oliguria (little to no urine)
Autosomal dominant polycystic kidney disease
Population
What is it
Defective gene
Adult
Gradual onset of renal failure.
PDK1 on chromosome 16, encodes polycystin-1
Autosomal recessive polycystic kidney
Population
Gene
Children
PKHD1 gene: fibrocystin
Most common cause of nephrotic syndrom in children
Minimal change disease
Pathology evaluation of kidneys (3)
Light microscopy
Immunofluorescence
Electron microscopy
Most common cause of nephrotic syndrome in adults
Focal and segmental glomerulosclerosis
Membranous nephropathy most common in
adults 30-50
Nephritic syndrom caused by
Acute postinfectious glomerulonephritis
IgA nephropathy
Henoch schonlein purpura
Glomerular disease assocaited with systemic manifestations