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VASC2 Final review
renal vasculature, etc
Category | List |
---|---|
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 |