CPB[體外循環]

CPB（Cardiopulmonary bypass），即體外循環，是指套用人工管道將人體大血管與人工心肺機連線，從靜脈系統引出靜脈血，並在體外氧合，再經血泵將氧合血輸回動脈系統的全過程，又稱心肺轉流，主要套用於心臟、大血管手術。

Cardiopulmonary bypass (CPB) is a technique that temporarily takes over the function of the heart and lungs during surgery, maintaining the circulation of blood and the oxygen content of the body. The CPB pump itself is often referred to as a heart–lung machine or "the pump". Cardiopulmonary bypass pumps are operated by perfusionists, medically directed by anesthesiologists, and surgically directed by cardiac surgeons who connect the pump to the patient's body. CPB is a form of extracorporeal circulation.