Nephrology / Urology Flashcards
Goldbblatt’s Kidney
Flea-Bitten (Ruptured capillaries from high BP)
Occlusion shunts pressure to contralateral kidney
PSGN
Sub-Epithelial humps of IgG / C3 / C4 Deposition
Lumpy on EM and ASO Abs
Common in children
Membranous Glomerulonephritis
Basement membrane spikes
Granular / Linear sub epithelial spikes and domes
Membranoproliferative glomerulonephritis
Tram tracks
Type II has low C3 on light microscopy
Minimal Change disease
Fused foot processes
No renal failure
FSGS
Most common in drug users, Black people, Hispanics, HIV
Most common types of kidney stones
Calcium phosphate, calcium oxalate (square)
Coffin-Lid crystals
Triple phosphate (struvite) stones
Rosette Christal kidney stones
Uric Acid
Not visible on X ray
pH above 7
Hexagonal crystal kidney stones
Cysteine (defective aa transport)
Aniridia
Wilms tumor association
Iridocyclitis
Inflammation within eye
Associate with juvenile RA
Phimosis
Foreskin scarred at penis head
Urge incontinence
Urgency leads to complete voiding
Detrusor spasticity leading to small bladder volume
Stress incontinence
Weak pelvic floor muscles
Urinating when coughing, laughing, etc
Estrogen effect
Overflow incontinence
Cannot completely empty bladder
WBC AND RBC casts in urine
Glomerulonephritis
Fat casts
Nephrotic syndrome
Waxy casts
Chronic Renal Failure
Tubular Casts
Acute tubular necrosis (ATN)
Muddy brown casts
Acute tubular necrosis (ATN)
Hyaline Casts
Normal sloughing
Epithelial casts
Normal sloughing
Measurements of afferent renal function
Creatinine or Inulin
Efferent renal function
BUN or PAH
Afferent arteriole
Monitors pressure (JG cells - Renin)
Paraphymosis
Foreskin scarred at penis base
Foreskin will strangulate the glans
BUN:Cr greater than 20
Pre-renal failure
Macula Densa
Measures osmolality
JG apparatus
Measures volume
Secretes renin
Fanconi Syndrome
Tetracycline use
Produces urine phosphates, glucose, AAs
Bartter’s Syndrome
JG cell hyperplasia: renin excess
NO increase in BP
Defect in kidney’s ability to reabsorb K+
Hepatorenal syndrome
High urea from liver
Increased Glutaminase, Ammonia, GABA
Kidney shuts down
RTA 1
Distal RTA
Broken H/K in collecting duct
High urine pH
RTA 2
Proximal RTA
Bad Carbonic Anhydrase
Loss of all HCO3-
IgA Nephropathies
HSP, Berger’s, Alport Syndrome
Most common nephrotic disease in diabetics
Nodular sclerosis
Nephrotic disease complication in CA
Usually Amyloidosis
Drugs affecting the PCT
Acetazolamide
Mannitol
Acetazolamide
CA inhibitor, also blocks HCO3- Reabsorption
Used for Glaucoma, Metabolic Alkalosis, altitude
AE: Metabolic acidosis, Ammonium, Sulfa allergy
Mannitol
Osmotic diuretic, increases tubular fluid osmolarity
Used for shock, ODs, ICP (when the bleed stops)
Loop drugs
Furosemide and Ethacrynic acid
Furosemide
Na/k/2Cl- inhibitor in TAL
Excretes Ca+, releases PGE. Inhibited by NSAIDs
AE: Ototoxic, Hypokalemic, alkalosis, hyperuricemia
Ethacrynic acid
Phenoxyacetic acid derivative, blocks Na/K/2Cl in TAL
AE: reversible ototoxicity, hypokalemia, alkalosis, hypoganesemia
HCTZ
Blocks Na and Cl into DCT, increase Ca2+ reabsorption
Spironolactone, Eplerenone
Competitive aldosterone receptor blocker in cortical CT
Feminizing
Triamterene, Amiloride
Block Na channels in cortical collecting tubule
Amiloride causes increase in Ca2+ reabsorption (helps tx Ca kidney stones)
AE: Hyperkalemia
Effects of NSAIDs on kidney
AIN
Constricts Afferent (into kidney) Arteriole
Effects of ACEi on kidney
Dilates Efferent (leaving kidney) arteriole
Effects of CCB on kidney
Dilates Afferent (into kidney) arteriole
Parkland formula
4 x Surface area burns x Kg
Give half in first 8 hours, other have over the next
Rule of 9’s for adults
Torso: 36 total
Arms: 9 each
Legs: 18 each
Head: 9 total
Genitals: 1
Rule of 9s for children
Torso: 36 total
HEAD: 18
Arms: 9 each
LEGS: 14 each
Genitals: 1
Treat hyponatremic patients
Mild (120-134): Stop Water
Mod (110-119): 0.9NS and Loop
Severe (below 110): 3% NaCl-
BUN:Cr
Over 20 means pre-renal, volume issue
PSGN Histo
Sub-EPIthelial deposits, Lumpy Bumpy EM
Granular (non-linear) IF
Goodpasture Histo
Smooth (linear) on IF
Can develop RPGN
RPGN Histo
Crescent (IgG/C3) on IF
IgA Nephropathy Histo
Mesangial deposits (IgA/C3) on IF
Membranoproliferative Histo
Tram Track, BM splitting on Silver Stain (LM)
Sub-ENDOthelial deposits on EM
Membranous Glomerulonephritis Histo
BM Spikes on Siler Stain (LM)
Granular / Linear on IF
Sub-EPIthelial Spike-and-dome
Minimal change disease histo
podocyte foot effacement on EM
Amyloidosis Histo
Extracellular Pink Protein (Congo Red) LM
AB2 Amyloid on IF
Nodular Glomerular Sclerosis Histo
Nodular sclerosis of glomeruli, Thick BM on LM
Hx of DM, kimmelstiel Wilson nodules, Christmas bells
Can progress to ESRD
Small Kidney
Renal Artery Stenosis
Large Kidneys
Polycystic kidney disease
Medullary Sponge Kidneys
Medullary Cystic Kidneys
Death by adult polycystic kidney disease
SAH / Berry aneurism in PCA:
Blown pupil: CN3
Worst HA
Tx w/ Transplant
Stress Incontenence
Associated with estrogen, coughing, sneezing
Tx w/ Kegles, pseudoephedrine
Urge incontenence
Increased detrusor activity
Children: desmopressin
Adults: Oxybutynin
Bartter Syndrome
mut NaK2Cl- transporter
No NaCl reabsorption in TAL (like a loop diuretic)
increased RAAS
Gitelman syndrome
mut NaCl cotransporter
No NaCl reabsorption in DCT (Like a Thiazide)
Increased RAAS
Liddle Syndrome
Defective ENaC in collecting tubule
HTN, low RAAS