The professional who operates the heart-lung
machine during surgery is a perfusionist.
"Perfusion" means that
branch or system of treating the sick that is limited to the operation
and management of extracorporeal circulation to support, temporarily
replace, measure, treat, or supplement the cardiopulmonary and circulatory
system of a patient, including, when necessary to and part of the
management and operation of extracorporeal circulation, the use
of blood testing and advanced life support techniques and technologies,
autotransfusion, and the administration of blood, blood products,
and anesthetic and pharmacological agents.
A person holding a license
to practice perfusion may practice perfusion under the orders and
supervision of a physician.