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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
what indicates splenomegaly
>12cm or spleen inferior to left kidney
26
what will a splenic artery aneurysm show
calcified circle in LUQ (xray) | always seen at the hilum
27
the celiac axis is
low resistance 2-3cm long superior to pancreas
28
what are the branches of the celiac axis
``` common hepatic proper hepatic GDA left gastric splenic artery ```
29
superior mesenteric artery
1cm below the celiac axis inferior to the pancreas high resistance = fastic low resistance= postparandial
30
renal arteries arise from the _____ wall of the AO
lateral walls
31
right renal artery passes posterior to
IVC
32
the left renal artery is _______ than the right
shorter
33
arise from the distal AO and are rarely seen
Gonadal arteries
34
With SMA AND CA stenosis or occlusion is becomes enlarged
Inferior Mesenteric Artery
35
To the right of the AO | posterior to the pancreatic head and liver
IVC
36
what makes the IVC dilate
cardiac failure and fluid overload
37
what is the most common tumor to involve the IVC
Renal cell carcinoma
38
the right renal vein
short
39
The left renal vein passes
the SMA & AO
40
the right gonadal vein drains into the _________ and the left gonadal vein drains into the
IVC, left renal vein
41
the azygous is on the
right
42
the hemiazygous is on the
left
43
what arteries supply each adrenal gland
suprarenal branch of inferior phrenic suprarenal branch of aorta suprarenal branch of renal artery
44
the right suprarenal vein drains into the ____ and the left suprarenal vein drains into the ______
IVC and left renal vein
45
involves all three layers typically fusiform measured AP & trans from outer to outer wall
true aortic aneurysm
46
bidirectional waveforms seen at the stalk
false Pseudoaneurysm
47
separation of the intima from the media
Dissecting aortic aneurysm
48
what is the mesenteric artery stenosis criteria
SMA velocity >275cm/ sec CA velocity >200cm/ sec represents a >70%stenosis
49
an abnormal connection between a vein and artery
arteriovenous shunts
50
sono for AV shunts
High velocity, low resistance color flow bruit (tissue vibration) pulsatile venous flow Low resistance arterial flow
51
thyroid arterial supply
superior thyroid arteries: branch of ECA | Inferior thyroid arteries : branch of thyrocervical trunk
52
thyroid veins drain into the __________ via the superior and middle thyroid veins and the inferior thyroid vein drains into the
Internal jugular veins innominate veins
53
The ICA is
Lateral and posterior low resistance first branch is the Opthalmic artery
54
The ECA is
medial and anterior High resistance first branch is the superior thyroid artery
55
the Internal Jugular vein is
Lateral to the CCA | IJV and the subclavian vein drain into the innominate vein
56
the external jugular vein is
located superficially on the lateral aspect of the neck

Fall 2014 study (9 decks)

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