Final Review Flashcards
what are kidney stones caused by
supersaturation or urine with insoluble salts, uric acid
insufficient water present in kidneys
what does is citrate
when is citrate low
a chemical that normally inhibits formation of stones
low when high levels of insoluble salts are uric acid are present
what are the most common types of kidney stones composed of
calcium
uric acid
struvite
cystine
what may pre hospital treatment of kidney stones consist of
iv fluids
transport in position of comfort
antiemetics
pain management
in what three ways are the causes of renal failure classified
pre renal
intrarenal
postrenal
what is the main cause of renal failure
inadequate blood flow to the kidneys
what does acute renal failure lead to
buildup of high levels of uremic toxins in the blood
patients with acute renal failure are divided into two groups based on the amount of urine excreted in 24 hours, the two groups are
oliguic, less than 500 ml
nonoliguric, more than 500 ml
what is the usual cause of prerenal acute renal failure
hypovolemia
impaired cardiac output
intrarenal acute renal failure results from
conditions that damage or injure both kidneys ie, glomerular and other microvascular diseases, tubular diseases, and interstitial diseases that directly damage the kidney parenchyma
postrenal acute renal failure is caused by
obstruction of urine flow from both kidneys
postrenal ARF may be caused by
ureteral and urethral obstructions
obstruction of a urinary catheter
how does chronic renal failure develop
kidneys are initially damaged, and make up for damage through hyperfiltration in the remaining working nephrons, which causes further nephron damage and loss of kidney function
what is the short answer for how acute and chronic renal failure develop
inadequate blood flow causes buildup of fluid and waste products in the body, which causes azotemia and uremia
uremic frost is…..
formation of urea crystals on the skin
what are the two types of renal dialysis
hemodialysis
peritoneal dialysis
what is a major complication of peritoneal dialysis
peritonitis
what is a pseudoaneurysm
dilation resembling an aneurysm that occurs at the site of a fistula or internal graft used for dialysis
what treatment should be provided if a pseudoaneurysm ruptures
direct pressure to hematoma
treat for significant blood loss
what is used to verify unobstructed circulation of a surgical anastomosis
the presence of a bruit (thrill)
why should BP not be measured in an extremity with a fistula or other means of vascular access
can decrease blood flow, which is a common trigger for thrombosis
why are dialysis patients at an increased risk for hemhorrage
regular exposure to anticoagulants during hemodialysis
decrease in platelet function
why can hypotension frequently occur during hemodialysis
rapid reduction of intravascular volume
abrupt changes in electrolyte concentrations
vascular instability that may occur during the procedure
pts with hypotension caused by dialysis must be managed cautiously with admin of volume expanding fluids, how much fluid should medics administer in this situation
200-300 ml