USIDMS Mesenteric Doppler
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each of the black spaces below before clicking
on it to display the answer.
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| What type of waveform is seen in the aorta above the renal arteries? Why? | Low resistance, because the organs need constant flow
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| What type of waveform is seen in the aorta below the renal arteries? Why? | High resistance, because the legs do not need constant flow
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| Why is true mesenteric ischemia rare? | Multiple collateral routes; the celiac, SMA, and IMA must all be occluded
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| How does the SMA waveform look preprandial? | High resistance
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| How does the SMA waveform look postprandial? | Low resistance
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| What PSV is characteristic of a 70% stenosis of the celiac artery? | Greater than 200 cm/s and post stenotic turbulence
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| What PSV is characteristic of a 70% stenosis of the SMA? | Greater than 275 cm/s and post stenotic turbulence
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| Which patient population is the highest risk group for AAA complications? | Males over 60 years of age
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| What are the branches of the celiac axis? | Left gastric artery, splenic artery, and common hepatic artery
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| Which artery allows communication between the celiac artery and SMA, providing collateral flow ? | Pancreaticoduodenal artery
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