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VASC2 Final review

renal vasculature, etc

CategoryList
Liver Allografts – 6 Post-op complications: "HI-HAT PIT BOAR" 1.-Hepatic Infarction 2.-Hepatic Artery Thrombosis 3.-Portal vein or IVC Thrombus 4.-Biliary Obstruction 5.-Abscess 6.-Rejection
4 types of peritransplant Fluid Collections: HULA - 1.) Hematoma 2.) Urinoma 3.) Lymphocele 4.) Abscess
4 Vascular Complications of Renal Transplant : 1.) Renal Artery Stenosis 2.) Renal Artery Thrombosis 3.) Pseudoaneurysm & AV Fistula 4.) Peritransplant Fluid Collections
Pulsatility index: PI= (A-B)/Mean vel where A= peak vel amd B= min vel
Risistive Index: RI= (A-B)/A where A= peak vel amd B= min vel
Rejection is diagnosed wen PI is: >1.8
Rejection is diagnosed wen RI is: >.7
"100% positive pedictive value for rejection" of a kidney transplant: An RI >.9
Sonographic diagnosis of renal vein thrombosis relies on: DIRECT VISUALIZATION of the renal vein
Most common cause of secondary HTN: Renovascular Hypertension (RVH)
Second most common cause of renovascular HTN: Fibromuscular dysplasia
Most common cause of correctable HTN : Renal Artery Stenosis (RAS)
Renal to Aortic Ratio (RAR) - 0-59% stenosis: RAR<3.5
Renal to Aortic Ratio (RAR) - 60-99% stenosis: RAR>3.5
Renal arterial flow path (7 items): Renal artery → renal hilum → segmental arteries → interlobar arteries → arcuate arteries → interlobular arteries →parenchyma
Renal venous flow path(7 items): parenchyma → Interlobular vein → arcuate vein→ interlobar vein → segmental vein → renal vein→ IVC
Fasting Celiac artery PSV, normal/ischemic: <122cm/sec / 200cm/sec
Fasting Celiac artery EDV, normal/ischemic: 32-35cm/sec / 55cm/sec
Fasting SMA PSV, normal/ischemic: <156 cm/sec / 275cm/sec
SMA postprandial PSV increase: ↑ 40%
SMA postprandial avg. increase: ↑164%
A stenosis of 70% or greater results in a fasting SMA PSV of: 275cm/sec
6 causes of Portal Vein Thrombosis: 1.) Cirrhosis 2.) Direct invasion or compression by neoplasm 3.) Post-op complications 4.) Pancreatitis 5.) Trauma 6.) Idiopathic
Flow toward the liver: hepatopedal
Flow away from the liver: hepatofugal
“T” or “Seagull sign” : Celiac Axis
“banana peel” sign Renal arteries - coronal view
Main portal vein formed by: union of splenic vein and SMV
Celiac Axis gives rise to these 3 vessels: 1.) Left gastric artery 2.) Hepatic artery 3.) Splenic artery
3 cerebrovascular collateral patterns: 1. Crossover 2. External to internal 3. Posterior to anterior
6 Branches of the Aorta 1. Celiac axis 2. Superior mesenteric artery (SMA) 3. Renal arteries 4. Inferior mesenteric artery 5. Common iliac arteries 6. External & Internal iliac arteries
Created by: lefut
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