B4-053 Renal Artery Stenosis Flashcards
renovascular hypertension leads to an increase in what lab values?
2
- plasma renin
- aldosterone
renovascular hypertension is caused by continuous activation of the
RAAS system
an ACE inhibitor will reduce levels of
angiotensin II
abdominal bruit
renal artery stenosis
if renal artery stenosis is suspected, the best intial step is
imaging
renal ultrasound with doppler
if renal artery stenosis is bilateral, what therapy is contraindicated?
may exacerbate renal insufficiency
ACE inhibitors
confirm diagnosis of renal artery stenosis via
ultrasound
renal artery stenosis results in […] in GFR
decrease
renal artery stenosis […] the hydrostatic pressure in the glomerulus
decreases
the activation of the RAAS system leads to […] retention
sodium
renal artery stenosis will lead to a plasma increase in
CMP value
creatinine
risk factors for renal artery stenosis
3
- DM
- high cholesterol
- high TG
renal artery stenosis will produce hypertension via activation of
RAAS
urea increases in the […] in CKD
blood
the obstruction caused by renal artery stenosis will cause
2
- decrease in blood hydrostatic pressure in glomerulus
- lowered glomeruluar filtration rate
renal artery stenosis causes GFR to
decrease
increased aldosterone causes higher reabsorption of
2
Na+
H2O
renal damage secondary to renal artery stenosis causes plasma […] levels to increase
creatinine
usually found in young females
fibromuscular dysplasia
positive Buerger’s test
patient’s feet become white on elevation
in renal insufficiency, plasma creatinine is elevated due to
low GFR
- recent elevated BP
- abdominal bruit
renal artery stenosis
directly activates Na+ reabsorption in the renal proximal tubule
angiotensin II
increased Na+ reabsorption in the renal distal tubule
aldosterone
induces K+ secretion
aldosterone
what is one of the most likely fist signs of renal insufficiency?
low GFR
reduce the conversion of angiotensin I to angiotensin 2
ACE inhibitors
reduce angiotensin II and aldosterone levels in blood
ACE inhibitors
best therapy for renal artery stenosis
stent
in renal artery stenosis, teh oncotic pressure in plasma and glomerular capillaries
remains unchanged
results in lower blood flow to the kidney and renal peritubular capillaries
renal artery stenosis
bruit is caused by
turbulent blood flow
renal insufficiency results in increased […] and […] in plasma
creatinine and urea
