Bypass surgery

Bypass surgery refers to a class of surgery involving rerouting a tubular body part.

Types include:
 * Vascular bypass surgery such as coronary artery bypass surgery, a heart operation, in which the internal thoracic artery and great saphanous vein are used to bypass the coronary artery.
 * Cardiopulmonary bypass, a technique used in coronary artery bypass surgery
 * In on-pump bypass surgery, a heart-lung machine is used; in off-pump bypass surgery, the surgeon stabilizies the heart without use of the machine.
 * Weight loss or Bariatric surgery:
 * Vertical banded gastroplasty surgery or "stomach stapling", the upper part of the stomach is permanently stapled to create a smaller pouch
 * Adjustable gastric band or "lap band", a band creates a pocket in the stomach that can be adjusted with a port placed just under the skin
 * Roux-en-Y gastric bypass surgery, the small intestine is connected to the upper part of the stomach
 * Partial ileal bypass surgery, shortening the final portion of the small intestine
 * Popliteal bypass surgery, to treat diseased leg arteries above or below the knee
 * Jejunojejunostomy, surgery that connects two portions of small intestine and is no longer used
 * Ileojejunal bypass, surgery that connects the middle and final portions of the small intestine that was experimental and is no longer used.