Vascular Mod 5 Flashcards

1
Q

Velocity ratio calculation

A

Velocity in stenosis / velocity before stenosis

Normal < 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Spectral waveform at different level of stenosis

A
Normal = triphasic no broadening
1-19% = triphasic, minimal SB, PSV increase < 30%
20-49% = Triphasic, prominent SB, PSV increase 30-100%
50-99% = Monophasic, extensive SB, PSV > 100%, distal waveform monophasic/dampened
Occluded = no flow
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Post-intervention follow up scans

A

q3 months for 1 year
< 50% stenosis: q6-12 months
50-75% stenosis: q3-6 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In stent stenosis criteria

A

> 50%
VR > 2-2.5
PSV > 180

> 70%
VR > 3.5
PSV > 300

How well did you know this?
1
Not at all
2
3
4
5
Perfectly