A bypass is an artificially created passageway that forms an alternative to a narrowed path, for instance in a blood vessel. This technique can be used for narrowed or blocked coronary arteries or leg arteries, for example. The bypass creates a new connection around the narrowed path, making it possible for enough blood to flow. Either the body’s own veins or arteries, or bypasses made of artificial tissue can be used to create this passageway. The artificial tissue may be made of Gore-Tex or Teflon.
