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IVC Anatomy
| Question | Answer |
|---|---|
| What do venous walls look like compared to aortic walls? | same 3 layers, only thinner because it's a low pressure system; can be compressed |
| What are the major tributaries to the IVC? | common iliac veins, gonadal veins, & renal veins |
| How does the left renal vein course? | anterior to the aorta & posterior to the SMA (between the 2) |
| How many hepatic veins are there & what is their sonographic sign? | 3 veins (left, middle, & right) known as the "bunny" sign |
| How can you tell the difference between portal veins & hepatic veins on US? | hepatic veins are anechoic (no bright walls) portal veins are echogenic (bright walls); appear oval or tear-drop shaped in transverse |
| The IVC is formed by: | the confluence of the common iliac veins |
| The IVC courses superiorly through: | the retroperitoneum, anterior & to the right of the spine, & to the right of the aorta |
| The right hepatic vein divides the liver into: | anterior & posterior right segments |
| the left hepatic vein divides the liver into: | medial & lateral left segments |
| the middle hepatic vein divides the liver into: | left & right lobes |
| Which tributaries do NOT drain directly into the IVC? | left gonadal & left suprarenal veins drain into the left renal vein |
| Normal IVC variants include: | duplicate IVC, left positioned IVC, & the absence of the intrahepatic IVC |
| Normal variants of the hepatic vein include: | accessory hepatic veins & absent right hepatic vein |
| The main job of the portal system: | supplies blood to the liver from the stomach, spleen, & small & large intestines |
| the Portal Confluence is the joining of: | the superior mesenteric vein & the splenic vein |
| Which vein drains into the splenic vein before the portal confluence? | the inferior mesenteric vein |
| the portal vein & its tributaries are where in relation to the pancreas? | portal vein- posterior to the pancreas neck & superior to the head splenic vein- posterior to the pancreas superior mesenteric vein- posterior to the pancreas neck |
| Portal Triad is made up of: | portal vein, common bile duct, & hepatic artery (all echogenic) |
Created by:
ginaliane
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