HLTH 2501: urinary tract obstructions, vascular disorders, and congenital disorders Flashcards
what is the urinary tract often obstructed by in older men?
benign prostatic hypertrophy or prostatic cancer
common urinary tract obstructions
tumors, inflammation, scarring, stenosis, congenital defects, and renal calculi
kidney stones two other names
urolithiasis or renal calculi
kidney stones
can develop anywhere in the urinary tract and tend to form when there is an excessive amount of relatively insoluble salts in the filtrate or when fluid intake is insufficient; these can commonly cause infections
staghorn calculus
is a very large stone that forms in the renal pelvis and calyces in the shape of a deer’s antlers
how do kidneys stones develop?
once solid material forms, deposits continue to build up on this nidus, a form a larger mass along with cell debris
treatment for small kidney stones
increasing fluid intake
hydronephrosis
stretched or swollen kidneys that can develop from kidney stones, scar tissue, tumors, or untreated prostatic enlargement
what are kidney stones composed of?
calcium salts mainly, as well as small amounts of uric acid, struvite, or cystine
struvite
magnesium ammonium phosphate; found in kidney stones
calcium stones
consist of phosphate, oxalate, or carbonate and form when calcium levels in the urine and high because of hypercalcemia, perhaps because of a parathyroid tumor or metabolic disorder
when are calcium stones likely to form?
when the urine is highly alkaline, when there is inadequate fluid intake, and in those who are vegetarian
uric stones
develop due to hyperuricemia due to gout, high purine diets, or chemo, especially when the urine is acidic
signs of kidney stones
back pain, renal colic attack (pain in the back that radiates to the groin), nausea, vomiting, cool, moist skin, and rapid pulse
another name for back pain
flank pain
what confirms the diagnosis of kidney stones?
radiologic examination
treatment for kidney stones
small stones will pass on their own; larger stones may be treated with extracorporeal shockwave lithotripsy, laser lithotripsy, and sometimes surgery
extracorporeal shockwave lithotripsy
uses sound waves to break up the kidney stone
laser lithotripsy
uses a ureteroscope to located to stone and a scope-mounted laser to destroy it
surgical removal of kidney stones procedure
is called a percutaneous nephrolithotomy
what does continued buildup of urine cause?
necrosis of tissue and direct pressure and compression of the blood vessels
hydronephrosis signs
usually is asymptomatic but may be back pain