Kidney Stones First-Aid Flashcards
Where to kidney stones usually form?
In the kidney, duh. But mostly in the major and minor calyces
How are kidney stones generally treated?
Therapies for stone prevention more desirable than treatment. Usually encouraging fluid intake.
Why do stones form?
etiology of stone formation remains unclear, but we do know some predisposing factors
What are general risk factors for kidney stones?
increased concentration of solute in urine and low urine volume
What is the general clinical pictures for kidney stones?
unilateral flank tenderness, colicky pain radiating to groin, and hematuria
What general structure will you see in kidney stones under the microscope?
layering of solute crystals
What are some Drugs That Can Form Stones?
- Indinavir
- Acyclovir
- Triamterene
- Sulfamethoxazole
What are some Drugs That Cause Stones?
- Topiramide
- Zonisamide
- Indinavir
- Vitamin D
- Calcium supplements
- Acetazolamide
- Loop diuretics
- Probenicid
- Ethylene glycol
How prevalent are cystine stones?
cause 1% of stones may have genetic defect in 2 possible genes one is recessive (typeA) and one is incompletely dominant (typeB)
What shape are cystine stones?
hexagonal and radiopaque
Who gets cystine stones?
mostly children secondary to cystinuria and can form staghorn calculi
What test is positive with cystine stones?
sodium nitroprusside test
How do we treat cystine stones?
alkalinization of urine and hydration
What can cause primary hyperoxalosis?
Rare genetic disorders of liver enzymes leading to excessive endogenous oxalate synthesis with 3 known gene defects all autosomal recessive only way to completely treat is liver transplant
What are diet risk factors for stones?
Diet Risk Factors:
– Low fluid intake
– High salt intake
– High protein intake (especially meat)
– Low calcium intake
– High oxalate intake (spinach, beets, rhubarb,
nuts, beans, chocolate, soy products, tea?)
