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Abdominal > Wk 5 > Flashcards

Wk 5 Flashcards

1
Q

Messenteric vessels

A 
Celiac
Hepatic
Splenic
SMA
IMA
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2
Q

Celiac axis

A

First major branch off aorta.

1-2cm below diaphragm

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3
Q

Celiac axis supplies

A 
Stomach
Duodenum 
Pancreas
Liver
Spleen
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4
Q

Why is direction important for abdominal

A

Veins can be red, arteries can be blue. Meaning the vessel is away from transducer but towards the organ

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5
Q

SMA

A

1-2 cm below celiac axis

Runs anterior and parallel to aorta

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6
Q

SMA supplies

A

Small intestine
Duodenum
Colon-to splenic flexure
Pancreas

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7
Q

IMA

A

Located 1-3 cm above aortic bifurcation.

Comes off aorta about 1 o’clock in trans.

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8
Q

IMA supplies

A

Colon-from splenic flexure

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9
Q

Common variants of mesentterics

A 
20% have variants.
Most common: rt hepatic comes off artery other than celiac.
Rt hepatic off SMA
common hepatic from SMA
Common hepatic from aorta 
Common origin of celiac and SMA
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10
Q

Mesenteric waveforms

A 
Celiac-low resistance 
SMA-high (fasting)
IMA-high (fasting)
Renals-low
Aorta-high
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11
Q

Indications for mesenteric ischemia

A

Abdominal pain/cramping when eating.
Abdominal bruit.
Post-prandial pain
Unintended weight loss

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12
Q

Patient prep

A

NPO-nothing after midnight
Food changes waves-document food intake
Supine
Slight reverse trend if needed

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13
Q

IAC protocol mesenteric

A 
Aorta
Celiac axis
Common hepatic
Splenic
SMA origin
Prox SMA
IMA
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14
Q

IAC protocol in long

A

Walk sample through for highest PSV.
Patency of celiac and SMA
Any conditions of great vessels

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15
Q

Celiac artery protocol

A

Patency
Common hepatic flow direction
Flow disturbance
High velocity or disturbed flow in celiac, hepatic, splenic. Measure.
If stenotic in celiac axis have patient hold breath

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16
Q

SMA protocol

A

Patency
High velocities or disturbed flow
Measure PSV in stenotic area

17
Q

IMA protocol

A

Patency
Locate IMA, best in trans
Measure PSV document stenosis

18
Q

Diagnostic criteria

A

Flow resistance patterns
Norma IMA SMA= high resistance in fasting patients.
Low resistance in IMA or SMA=mesenteric ischemia

19
Q

Celiac artery stenosis

A

PSV >200

Post stenotic turbulence

20
Q

Celiac artery occlusion

A

Absence of flow

Reserved common hepatic flow

21
Q

Criteria for celiac

A

<125 =normal=low resistance
>200 =70% stenosis
No flow, reversed hepatic=occlusion

22
Q

SMA criteria

A

<125 =normal=high resistance
>275 =70% stenosis
No flow, life IMA =occlusion

23
Q

Criteria IMA

A

No velocity criteria
Waves depend on celiac and SMA
Assess for post stenotic turbulence
High velocities can indicate compensatory flow

24
Q

Compensatory flow

A

Gut develops compensatory collateral flow.
May be asymptotic
Symptoms occur when 2/3 vessels occlude or stenos.

Abdominal (7 decks)

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