New unusual waveforms and situations

Question 1

What is aortic regurgitation?

- Seen as?

Answer 1

• a component of reversed flow called pulsus bisferans.

- Seen as a prominent notch in the waveform

Question 2

Tachycardia?

Answer 2

• > 100bpm
• The PSV is decreased while the EDV is increased
• Left ventricular volumes are decreased due to the limited duration of diastolic filling
• The heart cannot pump enough blood to meet the body’s needs
• Using PSV ratios is preferred for accurate grading of stenosis

Question 3

Bradycardia?

Answer 3

• <60bpm
• May be a sign of a problem with your heart’s electrical system
• The heart does not pump enough blood to meet the body’s needs
• PSV will be relatively elevated and the EDV will be low
• Using PSV ratios is most accurate method of grading a stenosis

Question 4

A high resistant flow pattern in the mid to distal ICA indicates?

Answer 4

intracranial ICA stenosis-siphon level

Question 5

ischemia?

Answer 5

an inadequate blood supply (circulation) to the small intestine

Question 5

ischemia?

Answer 5

an inadequate blood supply (circulation) to the small intestine