Renal patho Flashcards
why is kidney pain often described as flank pain rather than deep viseral pain?
this is because there are few pain receptors located within the kidney
if there is injury or infflamation inside the kidney it can lead to discomfort and minfests how? and why?
as flank pain radiating to the groin due to capsular or cortical irritation
what does ipsilateral mean?
on one side of the body
what dermatomes are involved around pain related to kidney issues?
T10 to L1
issues above the kidney are classified as…
Pre-renal
issues within the kidney are classified as…
intra renal
issues below that kidney are refered to as?
post renal
in your own words explain pre renal issues
anything that can cause indirect injury to the kidneys ie. reduced perfusion to the kidneys such as shock, or CHF
what is the percentage of ARF that are pre renal in nature? what is this caused by?
60% ; caused by decreased blood flow to the kidneys
what is the afferent arteriole?
the vessel that veeds blood into the glomerulus
Oliguria
low urine output ; suggests problem with filtration and fluid reabsorption.
what is the problem with holding onto fluids
the body is not getting rid of metabolic wastes and when it accumulates it can lead to complications like uremia
uremia
accumulation of urea in the blood which can contribute to acidosis
a retntion of acidic urine can cause what to happen?
the hydrogen ions migrate to tissues leading to renal acidosis
when kidney perfusion is compromised the RAAS system kicks in to retain sodium and water. this is beneficial however it can be problomatic in what cases?
systemic issues like distributive shock because the retained fluid make leak into tissues due to the increased capillary permeability leading to edema
what are nitrogenous wastes?
they are byproducts of protein metabolism and can accumulate in kidneys that are not filtering properly
during renal failure what vasoacvtive mediators are released and what are their roles?
nitric oxide (vasodialator) and endothelin (vasooconstrictor)
why is nitric oxide not helpful during renal failure
because the vasodialation it causes will worsen capillary permiability
why is endothelin not helpful during renal failure?
because the vasoconstriction occurs in tiny peritubular cappilaries (blood vessels in kidney) which further impairs kidney perfusion