True/ False: Duplex ultrasound is used to detect renal artery stenosis,
*Provides anatomical as well as hemodynamic functional information
*Low cost wo risk of ionizing radiation or use of nephrotoxic contrast agents
True
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15
what is renal-aortic ratio?
normal=< 3.5
occluded = kidney length <8cm
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true/ false: Second most common renal artery disease, medial fibromuscular dysplasia.
True. it causes string of beads affect (non-atherosclerotic disease affects mid to distal segments)
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15
What is shown in the image?
FMD
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With >80% stenosis, changes include
Delayed systolic upstroke
Loss of compliance peak
PSV decreased distally
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15
What does this waveform suggest?
FMD
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15
Renal artery stenosis should be suspected with.....?
Sudden onset or worsening of chronic hypertension
Unexplained renal insufficiency or pulmonary edema
Hypertensive children
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15
PSV greater ____ cm/s and stenosis greater ___ % is flow reducing renal artery stenosis.
180cm/s and >60%
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15
True/ False: Atherosclerosis is most common in renal artery disease
True. bilateral 30%
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15
What are kidneys important landmarks?
Transpyloric plane
Located halfway between suprasternal notch and symphysis pubis
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15
spectral waveforms should be recorded from the level of ____ & ____.
celiac and SMA
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15
Rigth kidney is _____ to left.
inferior
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15
Renal artery disease is correctable with?
Treatment will control or cure Renovascular hypertension,
Retention of renal mass,
Stabilization of renal function
