Chapter 11 Abdominal Doppler Flashcards
What is the appropriate probe for aortic scan/Doppler?
- 5 MHz
2. 5 MHz for large difficult patients
What are the 2 basic patient positions for abdominal scanning?
- Midline approach
2. Side flank approach
What are the probe choices for aortic scans?
- Curved linear
2. Phased array
How is the right renal positioned anatomically and off the AO?
- Anatomically anterolaterally
2. 10 o clock
How is the Left Renal positioned anatomically and off the AO?
- Posterolateral
2. 4:00 position
What is the Doppler character for suprasternal aorta?
Monphasic due to low resistance bed.
What is the Doppler character of the infra renal aorta?
Multiphasic due to higher resistance beds. Also similar to LE arteries
Suprarenal refers to:
Proximal AO and is part of the distal bed
Infra renal refers to:
Distal To renal arteries
What arteries are assessed in abdominal Doppler
Supra renal
Infra renal
Celiac trunk
Flow character in all branches tend to have the same as an ICA
Because?
They all perfuse organs with low resistance
Renal arteries divide into what 5 segmental arteries?
Hilum»_space;> renal pyramids»_space;> interlobular arteries»_space;> arcuate arteries»_space;> interlobar arteries
What is the normal length for a kidney?
9 to 12 cm
Less than 9 suggest renal failure
What 2 different approaches are used to measure the kidneys?
- Posterolateral (levels)
2. Anterolateral (tilts)
Describe the banana peel view?
Peel view of the aorta along with renal origins on the same plane. The right will be anterior 10:00 and the left will be more posterior 4:00.
What are we looking for in Hilum color doppler?
- Early systolic peak (ESP)
2. Rapid acceleration time (rise time)
A Postprandial patient refers to what?
Patient being scanned after a meal
Which study would have less diastolic flow in the SMA. Fasting patient or a postprandial patient? And why
Fasting patient will have less flow because the intestine requires less perfusion in a fasting state.
What are 3 Doppler waveforms from the flank approach?
- The distal renal artery
- The Hilum
- The renal parenchyma
In renal artery Doppler where do we drop our angle box?
- 1-2 cm from the kidney
- 2-3 cm proximal to that
- Measure only PSV
What does parenchyma refer too?
Organ tissue getting within the kidney.
After a patient eats (________ state) the intestine becomes active and requires more ________.
Postprandial and perfusion
The loss of diastolic flow in a postprandial superior Mesenteric artery may suggest _______ or _______.
Distal stenosis or occlusion.
The loss in Doppler character w/I the kidney parachyma suggest _______ or ________.
Renal disease or causing organ failure
