URR Renal Vessels Flashcards
what is the blood flow sequence in the renals starting from the ao?
ao -> main renal a -> segmental a -> interlobar a -> arcuate a -> intralobular a -> afferent arterioles
where does the left renal artery originate?
posterolateral aorta
where does the right renal artery originate?
anterolateral aorta, courses posterior to the IVC
which renal artery is slightly inferior?
right
renal arteries are usually how to veins?
posterior
the left renal artery is between what 2 arteries?
SMA and Ao
how is the resistance in the renal artery?
lowly resistive
30% of patients have a duplicate what artery?
renal
-smaller of the two is the accessory artery
-usually originate from SMA or common iliacs
what is an abnormal renal a RI?
> .7
what is renovascular HTN and renal a stenosis?
refers to HTN that is unresponsive to meds
-BP may be at very high levels
what is the most common site for a renal transplant?
right iliac fossa
what artery is used to anastomose in a renal transplant?
external iliac a and vice versa for veins (norm: EDV >.2 interlobar: RI <.7)
-internal iliac is an alternative
what causes renal transplant rejection?
acute tubular necrosis (#1 acute cause), rejection, drugs
what are signs for renal transplant rejection?
oliguria and increased BUN and creatinine
-usually develops 1-3 weeks to months
what stage is the transplant rejection in when function progressively decreases at least 3 months after surgery?
chronic
