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KaBoom > Abdominal Vasculature - Part 4 > Flashcards

Abdominal Vasculature - Part 4 Flashcards

1
Q

What does the MPV drain? (4 )

A
  1. Gastrointestinal tract
  2. Pancreas
  3. Spleen
  4. GB
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2
Q

How much blood does the MPV supply to the liver?

A

70%

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3
Q

What makes up the MPV? (2)

A
  1. Splenic vein

2. SMV

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4
Q

When does the MPV bifurcate?

A

Just beyond the porta hepatis

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5
Q

What should the MPV not exceed? (3)

A
  1. 1.3cm in diameter in adults greater than 20 years of age
  2. 1.0cm in diameter between 10 and 20 years of age
  3. 0.85cm in diameter less than 10 years of age
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6
Q

What kind of flow does the MPV demonstrate?

A

Phasic low-flow velocities toward the liver

- hepatopetal

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7
Q

What happens to blood flow after inspiration in the MPV?

A

Will decrease

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8
Q

What happens to blood flow after expiration in the MPV?

A

Will increase

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9
Q

What happens to the MPV diameter after a meal?

A

It will increase

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10
Q

Where does the splenic vein course?

A

Posterior to the pancreas and crosses anterior to the superior mesenteric
artery

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11
Q

What kind of flow is demonstrated by the splenic vein?

A

Spontaneous phasic flow away from the spleen and toward the liver
- hepatopedal

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12
Q

What is the size of the splenic vein?

A

10mm or less

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13
Q

What happens to the splenic vein diameter with inspiration?

A

It increases

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14
Q

What does the splenic vein drain? (3)

A
  1. Spleen
  2. Pancreas
  3. Portion of the stomach
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15
Q

Where does the SMV course?

A

parallel to the SMA

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16
Q

What kind of flow is demonstrated by the SMV?

A

Spontaneous phasic flow toward the liver

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17
Q

What is the normal diameter of the SMV?

A

10mm or less

18
Q

What happens to the diameter of the SMV during inspiration and following a meal?

A

It increases

19
Q

What does the SMV drain? (3)

A
  1. Small intestines
  2. Ascending colon
  3. Transverse colon
20
Q

Where does the right gonadal vein empty into?

A

IVC

21
Q

Where does the left gonadal vein empty into?

A

Into the left renal vein
- occasionally into the left
suprarenal vein

22
Q

Where do the lumbar veins a branch of?

A

The common iliac veins

23
Q

Where do the lumbar veins course?

A

Lateral to the spine and posterior to the psoas muscles

24
Q

Where does the abdominal aorta compared to the IVC?

A

Lies to the left of midline

25
Q

Where does the abdominal aorta course?

A

Courses inferior and anterior in the abdomen to the level of the fourth lumbar vertebra
- umbilicus

26
Q

What does the abdominal aorta bifurcate into?

A

Right and left common iliac arteries

27
Q

Where does the IVC lie compared to the abdominal aorta?

A

To the right of midline

28
Q

What level does the IVC form at?

A

Formed at the level of the fifth lumbar vertebra at the junction of the right and left
common iliac veins

29
Q

Where does the IVC course?

A

Superiorly in the abdomen to the right atrium of the heart

30
Q

Where does the IVC lay compared to the head of the pancreas?

A

Posterior

31
Q

What should the size of the normal abdominal aorta not exceed in diameter?

A

3cm

32
Q

What should the size of the normal suprarenal artery not exceed in diameter?

A

2.5cm

33
Q

What should the size of the normal renal artery not exceed in diameter?

A

1.5cm

34
Q

What should the size of the normal infrarenal artery not exceed in diameter?

A

1.5cm

35
Q

What should the size of the normal common iliac artery not exceed in diameter?

A

1.0cm

36
Q

What is the size of the IVC?

A

Less than 2.5cm

37
Q

What happens to the IVC during inspiration?

A

It increases

38
Q

What happens to the IVC during expiration?

A

It decreases

39
Q

What is the US appearance of the aorta? (3)

A
  1. Anechoic tubular structure
  2. Thin hyper echoic wall margins
  3. Internal vascular flow
40
Q

What kind of resistance is demonstrated in the aorta?

A

High-resistance multiphasic parabolic flow pattern

41
Q

What kind of resistance is demonstrated in the IVC?

A

Spontaneous phasic flow and multiphasic pulsatile flow as it nears the diaphragm

KaBoom (81 decks)

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