Duplex/color flow imaging (abdomen) Flashcards
A dilation > 3cm or an increase in diameter of 50% greater than original artery.
Aorto-iliac arteries aneurysm
Evaluate vessels for stenosis, status of bypass grafts, aneurysmal disease
Aorto-iliac vessels
Majority of abdominal aortic aneurysms (AAA) are
atherosclerotic and intrarenal
Rupture of the aortic aneurysm; embolization of the peripheral aneurysms (could cause blue toe) Trash foot
Most frequent complication with aneurysm
An enzyme that converts angiotensinogen to angiotensin
(related to renovascular hypertension)
Renin
Many of these patients with present with hypertension (controlled or not controlled)
Renal artery studies
Renal arteries and kidney arteries are normally more ____ resistant
Low (above baseline diastole)
The aorta is usually _______ resistant
Higher
If a AAA is detected you cannot use
Renal to aortic ratio (RAR)
Highest renal artery divided by Aorta PSV
Renal to aortic ratio (RAR)
If aortic PSV is > 90 cm/s or < 40 cm/s you cannot use
Renal to aortic ratio (RAR)
Abnormal (RAR)
> 3.5 (suggests > 60% diameter reduction)
Normal (RAR)
< 3.5
> 180 - 200 cm/s that is followed by post - stenotic turbulence
Too fast!
Normal pole length of a kidney is
10-12 cm.