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Fall 2014 study > abd vascular > Flashcards

abd vascular Flashcards

1
Q

Portal vein

A

Low velocity continuous flow

hepatic blood flow
25% proper hepatic
75% pv

13mm diameter
hepatopetal
intrasegmental
hyperechoic walls

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2
Q

Hepatic vein

A 
3(Right, middle and left)
Blood flow towards the IVC
phases above and below the baseline
TRIPHASIC (rt artrial filling and relaxation)
Intersegmental and interlobar
Non echogenic walls
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3
Q

Created to lower portal pressure
placed between the RHV & RPV
demontrates hepatofugal flow

A

Transjugular Intrahepatic postosystemic shun (TIPS)

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4
Q

what does a TIPS velocity of

A

low velocity means lumen occlusion in the future

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5
Q

what does a TIPS velocity of >190cm/ sec mean

A

high velocity means there is a narrowing of the shunt

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6
Q

Hepatic artery

A

parallel to the MPV (anterior and left)

low resistance

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7
Q

Post op liver transplant what does a high resistance hepatic artery waveform suggest

A

venous congestion of the liver or possible organ rejection

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8
Q

a parvus tardus (hepatic/ renal ) waveform suggests

A

a proximal anastomosis stenosis

(>50%) “ small, low pulse”

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9
Q

name the renal vascular flow

A 
main renal artery 
segmental 
interlobar
arcuate
interlobular
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10
Q

what does a high restistance renal artery waveform suggest?

A 
Renal vein thrombosis
acute tubular necrosis
acute glomerulonephritis (GN)
transplant rejection
Hydronephrosis
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11
Q

A RI of ___ is suggestive of obstructive hydronephrosis

A

> 0.7

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12
Q

What is the normal RI

A

0.7

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13
Q

Renal artery demonstrates

A

continuous forward flow during diastole, typical of low resistance flow

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14
Q

what is the formula for RI

A 
              Peak systolic freq
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15
Q

what does a RI= 0.5 mean

A

diastole is 50% of systole

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16
Q

what does a RI= 0.7

A

diastole is 30% of systole

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17
Q

what does a RI =1.0

A

diastole is absent

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18
Q

what is the RI the is questionable for transplant dysfunction

A

0.7-0.8

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19
Q

what is the RI for transplant dysfunction

A

> 0.8

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20
Q

the testicular blood flow is supplied by the

A 
deferential artery
cremasteric (external spermatic) artery
Testicular artery 
          capsular 
           centripetal( intratesticular)
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21
Q

how do you rule out complete torsion

A

by decreasing the PRF ( color scale) it will better optimize slow blood flow

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22
Q

Typically the arterial supply of the prostate with branches from the internal iliac arteries

A

Inferior vesical artery

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23
Q

What is the normal liver size

A

15.5 AP superior to inferior

24
Q

what is the normal spleen size

A

12cm L
8cmW
4cm THick( AP)

25
Q

what indicates splenomegaly

A

> 12cm or spleen inferior to left kidney

26
Q

what will a splenic artery aneurysm show

A

calcified circle in LUQ (xray)

always seen at the hilum

27
Q

the celiac axis is

A

low resistance
2-3cm long
superior to pancreas

28
Q

what are the branches of the celiac axis

A 
common hepatic
              proper hepatic 
              GDA
left gastric 
splenic artery
29
Q

superior mesenteric artery

A

1cm below the celiac axis
inferior to the pancreas

high resistance = fastic
low resistance= postparandial

30
Q

renal arteries arise from the _____ wall of the AO

A

lateral walls

31
Q

right renal artery passes posterior to

A

IVC

32
Q

the left renal artery is _______ than the right

A

shorter

33
Q

arise from the distal AO and are rarely seen

A

Gonadal arteries

34
Q

With SMA AND CA stenosis or occlusion is becomes enlarged

A

Inferior Mesenteric Artery

35
Q

To the right of the AO

posterior to the pancreatic head and liver

A

IVC

36
Q

what makes the IVC dilate

A

cardiac failure and fluid overload

37
Q

what is the most common tumor to involve the IVC

A

Renal cell carcinoma

38
Q

the right renal vein

A

short

39
Q

The left renal vein passes

A

the SMA & AO

40
Q

the right gonadal vein drains into the _________ and the left gonadal vein drains into the

A

IVC, left renal vein

41
Q

the azygous is on the

A

right

42
Q

the hemiazygous is on the

A

left

43
Q

what arteries supply each adrenal gland

A

suprarenal branch of inferior phrenic
suprarenal branch of aorta
suprarenal branch of renal artery

44
Q

the right suprarenal vein drains into the ____ and the left suprarenal vein drains into the ______

A

IVC and left renal vein

45
Q

involves all three layers
typically fusiform
measured AP & trans from outer to outer wall

A

true aortic aneurysm

46
Q

bidirectional waveforms seen at the stalk

A

false Pseudoaneurysm

47
Q

separation of the intima from the media

A

Dissecting aortic aneurysm

48
Q

what is the mesenteric artery stenosis criteria

A

SMA velocity >275cm/ sec
CA velocity >200cm/ sec
represents a >70%stenosis

49
Q

an abnormal connection between a vein and artery

A

arteriovenous shunts

50
Q

sono for AV shunts

A

High velocity, low resistance

color flow bruit (tissue vibration)
pulsatile venous flow
Low resistance arterial flow

51
Q

thyroid arterial supply

A

superior thyroid arteries: branch of ECA

Inferior thyroid arteries : branch of thyrocervical trunk

52
Q

thyroid veins drain into the __________ via the superior and middle thyroid veins

and the inferior thyroid vein drains into the

A

Internal jugular veins

innominate veins

53
Q

The ICA is

A

Lateral and posterior
low resistance
first branch is the Opthalmic artery

54
Q

The ECA is

A

medial and anterior
High resistance
first branch is the superior thyroid artery

55
Q

the Internal Jugular vein is

A

Lateral to the CCA

IJV and the subclavian vein drain into the innominate vein

56
Q

the external jugular vein is

A

located superficially on the lateral aspect of the neck

Fall 2014 study (9 decks)

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