USIDMS Renal Doppler
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| True or false. The right renal artery courses posterior to the IVC. | true
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| What two vessels does the left renal vein course between? | the SMA and aorta
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| What should the resistive index be below to be considered a normal direct renal study? | <0.75
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| Briefly explain how an indirect study is performed. | Color Doppler is used on the segmental arteries at the superior pole, mid and inferior poles of each kidney. The acceleration time is measured and the presence of an early systolic peak is noted if seen.
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| What is the criteria of a normal indirect waveform? | presence of an early systolic peak, acceleration time <0.07 seconds, presence of diastolic flow, resistive index <0.75
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| Is renal fibromuscular dysplasia more common in women or men? | women
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| True or false. When evaluating a renal transplant, it's important to look for arterial kinks, stenosis, and organ rejection. | true
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| A tardus parvus waveform seen in the mid segmental artery indicates a stenosis _________ to that area, possibly in the main renal artery. | proximal
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| What is the criteria for a renal artery occlusion? | no flow detectable in the renal artery, low frequency shift in the color and Doppler signal from the parenchyma, small kidney size (<9 cm)
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| True or false. Blood flow in the renal arteries should be high resistance. | false; should be low resistance
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