- Inferior vena cava
- One of the largest veins in the body, located in the chest; all blood in the lower body (below the heart) travels through this vein which then empties into the right atrium.
- INR (or pro-thrombin time)
- A blood test that measures how well your blood clots; used to adjust the dose of an anti-coagulant (blood thinner) called warfarin® (coumadin)
- Internal jugular vein
- A large vein in the neck that carries blood from the head back to the heart and is often used in right heart catheterization