Abdominal Doppler Flashcards
T/F
Portal HTN elevated pressure in portal venous system is due to increase impedance of flow through the
liver
True (page 322 jo)
T/F
Most portal htn cases are due to cirrhosis
True (page 322 jo)
T/F
Hepatic V enlarges as they approach diaphragm
True (page 324 jo)
T/F
Most intact ao aneurysms produce symptoms of back and abd pain
False (page 305 trick question) most are asymptomatic
T/F
There is no correlation b/t size and rupture of aneurysm
False (jo)
Multiple Risk Factors for AAA
- an except question
- tobacco abuse
- hereditary/ family hx
- advanced age
- male (5x more likely)
- High cholesterol
- obesity
(JL pg 305)
Renal a stenosis must be greater than what percent before causing htn
Greater than or equal to 70% (page308 jo)
Criteria for 60% stenosis is what
RAR >3.5
PSV >180cm/s
Post-stenotic turbulence
Low flow velocity in distal renal artery
(JL pg 312)
Calculate RAR, PSV of renal a is divided by what
aortic PSV
JL pg 312
Technique limitation for renal Doppler studies include
- Excessive depth of the renal arteries
- motion of respiration
- intra-abdominal gas obscuring the image
- Obesity
- Previous abdominal surgery
(JL pg 313)
Transducers that would reach the nyquist limit, pick which is best
Higher frequency reaches nyquist limit. Solution is to switch to lower frequency probe. (Jo)
Skeletal muscular dysplasia, who is affected most and why do they have FMD
Women are affected. It has unkown origins but is related to hypertension. Fibrous thickening of intima, media, or adventitia. Usually bilateral. Can occur in carotids. Occurs in tje mid to distal segments of the renal arteries. (page 316 jo)
Know the RI for a renal transplant rejection
> .8 (page 317 jo)
What fear of food syndrome
Usually caused by occlusive disease at celiac, SMA, and IMA. Celiac >200 cm/s with post stenotic turbulance = >70% stenosis. SMA>275 cm/s with post stenotic turbulance= >70% stenosis (page 320 jo)
or Mesentric Ischemia (JL pg 317-318)
Hepatic outflow obstruction can be caused by
-Hepatomegaly
-Splenomegaly
-Ascites
-Extrinsic compression by a tumor
-Thrombus in the hepatic veins or IVC
(Page 325 jo)
What is Budd Chiari
Stenosis or obstruction of the hepatic veins (page 324 jo)
Right Renal Artery in reference to the IVC
Posterior to IVC (page 308 jo)
What percent of pop have polar renal arteries
20% (page 314 jo)
Which of these renal vessels would produce a waveform with early systolic peak
Segmental? ( page 315 jo)
Normal portal venous flow direction
Hepatopetal towardd liver (page 321 jo)
TIPS is a connection between what vessels
Portal vein and hepatic vein ( page 323 jo)
Normal hepatic v flow direction
Hepatofugal away fromliver to ivc (page 324 jo)
LT and Middle hepatic v join before the IVC in what percentage of the population
96% (Page 324 jo)
Portal v is formed at the confluence of what two veins
superior mesenteric vein and splenic vein (page 321 jo)
Percentage of patient with ruptured AAA survive
10-25% (Page 305 jo)
Most common cause of aneurysms
Atherosclerotic disease (page 305 jo)
Marfans has a history of creating what kind of aneurysm
Dissection. I have written in my notes that beth wants to know if it is in the ascending or descending aorta. Jo
Who is longer and shorter between renal a and v
Right renal atery is longer than the left renal artery (page 308 jo)
right renal vein is shorter than left renal v (JL pg 308
Which vessels extend into the renal cortex
Interlobar (page 309 jo)
