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Spring 2014 - ABD TEST 1 - ARTERIES & VEINS ✔️ > Doppler > Flashcards

Doppler Flashcards

0
Q

What is the most important thing to remember when using Doppler?

A

Proper curser placement

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1
Q

What does Doppler do?

A

Analyzes flow - presence or absence of flow

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2
Q

Along with flow, Doppler can also show what?

A

Direction of flow in color

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3
Q

What is heptapetal?

A

Flow towards the liver

This is the RIGHT way

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4
Q

What is hepatofugal?

A

Flow away from the liver

This is the WRONG way

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5
Q

Portal flow issue is usually related to what?

A

Portal hypertension

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6
Q

Flow analysis with Doppler will show what within the vessel?

A

Disturbances in color

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7
Q

What are the 2 kinds of spectral Doppler waveforms?

A

Non resistive or low flow

Resistive or high flow

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8
Q

What is non resistive or low flow?

A

High diastolic
Constant perfusion
Internal carotid, hepatic, renal

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9
Q

What is resistive or high flow?

A

Little diastolic or reversed flow
Supplies organs that do not need constant blood flow
External carotid, iliac and brachial arteries

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10
Q

The horizontal or x axis on the spectral display represents what?

A

Time

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11
Q

The vertical or y axis on the spectral display represents what?

A

Doppler shift frequency

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12
Q

Spectral display shows what?

A

Peak systolic and end diastolic

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13
Q

Blood velocity is calculated by what?

A

Frequency shifts

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14
Q

RI is what?

A 
         Peak systolic

Shows impedance in a vessel; resistive index

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15
Q

What is the other kind of index?

A

PI

Pulsatility Index

16
Q

Blood flow is described in what 2 ways?

A

Laminar - normal flow

Turbulent - abnormal flow

17
Q

What are aorta flow patterns?

A

High systolic peak
Varies at different levels
Triphasic closer to legs

18
Q

What are celiac flow patterns?

A

Spectral broadening

No change related to eating

19
Q

What is hepatic artery flow patterns?

A

Flow in diastole persists

20
Q

What is splenic artery flow patterns?

A

Turbulent

Prone to aneurysms

21
Q

What is SMA flow patterns?

A

Highly resistive when fasting

Low resistive after eating

22
Q

What is renal artery flow patterns?

A

Low resistive
High diastole flow
Spectral broadening

Spring 2014 - ABD TEST 1 - ARTERIES & VEINS ✔️ (5 decks)

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