[Cardiopulmonary Bypass System and Perfusion]

Abstract

In addition to maintaining circulation and gas exchange, the heart-lung machine is responsible for ensuring a bloodless field, retrieve of blood, suppression of metabolism, blood dilution and concentration, and myocardial protection. The heart-lung machine has 2 kinds of circuits having different characteristics, that is an open circuit and a closed circuit. Either a roller pump or a centrifugal pump is used in the machine. Gas exchange is performed by using a membrane type oxygenator. Venting, suction, myocardial protection circuit are important items in the machine. Safety devices and troubleshooting are required for safety management of the heart-lung machine.