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Abdominal > Quiz 4 (abdominal vasculature) > Flashcards

Quiz 4 (abdominal vasculature) Flashcards

1
Q

what is the most common cause of vascular disease?

A

atherosclerosis

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2
Q

when is an aneurysm considered present?

A

infrarenal diameter is 3 cm or greater

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3
Q

how do you measure an abdominal aortic aneurysm (AAA)?

A

measure outer wall to outer wall

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4
Q

what changes SMA post prandial?

A
  • PSV increases to meet demands of digestion in the SB (may double/triple)
  • EDV increases 2-3 times higher than is fasting state and has continuous flow pattern through diastole
  • assumes a low resistant flow pattern
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5
Q

what fails to occur in SMA?

A

in a diseased state, changes to the SMA post prandial fail to occur

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6
Q

what is the most common cause of renal artery stenosis?

A

atherosclerosis

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7
Q

what is the second most common cause of renal artery stenosis?

A

fibromuscular dysplasia

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8
Q

what is the normal PSV in a renal artery?

A

under 180 cm/s

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9
Q

how do you calculate resistive indices?

A

RI=PSV-EDV/PSV

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10
Q

what is indicative of an “upstream” significant renal artery stenosis?

A

segmental branches demonstrate a tardus-parvus waveform

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11
Q

what is a sign, not a cause of IVC occlusion?

A

bilateral leg swelling

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12
Q

what could compression of left renal vein (nutcracker syndrome) lead to in men?

A

left scrotal varicoceles leading to pain or infertility. This is because gonadal veins drain into the left renal vein

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13
Q

what could compression of left renal vein (nutcracker syndrome) lead to in women?

A

left ovary can be enlarged (congestion)

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14
Q

what is the normal hepatic artery PSV in a fasting adult patient?

A

30-40 cm/s

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15
Q

what is the normal hepatic artery EDV in a fasting adult patient?

A

10-15 cm/s

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16
Q

what flow pattern is demonstrated in the SMA in a fasting patient?

A

high resistant flow

17
Q

how much longer after eating can waveform of SMA become low resistant?

A

within 30-90 minutes

18
Q

how much of the cardiac output passes through the renal arteries to be filtered by the kidneys?

A

one third of the total cardiac output

Abdominal (11 decks)

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