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Healthcare professional who uses the cardiopulmonary bypass machine

A cardiovascular perfusionist, clinical perfusionist or perfusiologist, and occasionally a cardiopulmonary bypass doctor or clinical perfusion scientist, is a healthcare professional who operates the cardiopulmonary bypass machine (heart–lung machine) during cardiac surgery and other surgeries that require cardiopulmonary bypass to manage the patient's physiological status.

Perfusionists form part of the wider cardiovascular surgical team which includes cardiac surgeons, anesthesiologists, and residents. Their role is to conduct extracorporeal circulation as well as ensure the management of physiologic functions by monitoring the necessary variables. The perfusionist provides consultation to the physician in selecting appropriate equipment and techniques to be used. Other responsibilities include administering blood products, administering anesthetic agents or drugs, measuring selected laboratory values (such as blood cell count), monitoring circulation, monitoring blood gases, surveil anticoagulation, induction of hypothermia, and hemodilution. As of 2022, there are 18 accredited perfusion training programs, of which ten are master's degrees, seven are certificate programs, and one is a bachelor's degrees. Training typically consists of two years of academic and clinical education. A perfusion student will typically begin his or her training in a didactic fashion in which the student will closely follow instructions from a certified clinical perfusionist in the confines of a cardiac surgery procedure. Academic coursework may be concurrent or precede this clinical instruction. Early in their clinical training, the perfusion student may have little involvement outside of an observational role. However, as time progresses, more tasks may be incrementally delegated to them. Upon graduating from a perfusion program, the graduate must begin the certification process. In the interim, the perfusion graduate is typically referred to as board eligible, which is sufficient for employment in cardiac surgery with the understanding that achieving certified status is required for long term employment. Most employers have stipulations on the duration of board eligible status. To become certified as a certified clinical perfusionist, a perfusionist must undergo a two part exam administered by the American Board of Cardiovascular Perfusion. The first part is the Perfusion Basic Science Exam and the second part the Clinical Applications in Perfusion Exam. The exam process is open to a perfusion student that has graduated or about to graduate from an accredited perfusion education program. In addition, a perfusion student must have participated in a minimum of 75 perfusions during the course of their training before sitting for the Perfusion Basic Science Exam and performed 40 independent perfusions after graduation before sitting for the Clinical Applications in Perfusion Exam. Upon passing the Clinical Applications in Perfusion Exam, the perfusionist is designated a certified clinical perfusionist. Following certification, perfusionists must be recertified every year by attaining minimum clinical and educational requirements. Proof of fulfillment of these recertification requirements must be submitted to the American Board of Cardiovascular Perfusion and are mandatory to maintain certified status to use the designation. As of February 2010, there were 3,766 certified perfusionists in the United States and approximately 300 certified perfusionists in Canada.

In Canada, there are three training programs: Burnaby in Western Canada, Toronto and Montreal in Eastern Canada. British Columbia Institute of Technology in Burnaby offers an advanced specialty certificate in cardiovascular perfusion to graduates of its two year program. Applicants must be certified respiratory therapists, critical care nurses, or cardiac professionals with two years or more of current experience in cardiac critical care. Applicants to the Michener Institute program in Toronto must have a bachelor's degree at minimum, with or without respiratory therapy, nursing or other clinical certification. The Master’s program is two years. The perfusion program of the Université de Montréal is a three year bachelor's degree of 90 credits in biomedical science of which 27 credits are specific to clinical perfusion and in addition a diplôme d’études supérieurs spécialisées (DESS) of 30 credits in clinical perfusion of one year at the master level.

In the United Kingdom and Ireland, a bachelor's degree in a science subject (usually life or clinical sciences) is a prerequisite to enrolment on the two year perfusion training course. Trainees must complete a two year MSc program at the University of Bristol while employed as a trainee perfusionist by a sponsoring hospital trust. This post is paid as an annex U AfC band 7. They complete academic assessments (essays and exams), while in the workplace moving from a purely observational role to one in which they are capable of managing the patient while they are on cardiopulmonary system with minimal supervision. Once a trainee has been the primary perfusionist in 150 clinical procedures, they must undertake a practical exam. For this exam, the candidate is observed by two external examiners whilst building and priming a cardiopulmonary circuit, then using it during a surgical operation. After the practical exam, trainees must complete a 40 minute viva voce exam, which tests their academic knowledge. After this is successfully completed, they are awarded an MSc in Clinical Perfusion Science and the status of accredited clinical perfusion scientist. They must maintain this by performing a minimum of 40 clinical procedures per year.

In some states of Australia and New Zealand, a perfusionist must have at least a science degree (usually in health sciences) as an entry requirement before training. Further didactic training is in a practical format at a hospital whilst doing a three year course via correspondence and e learning, with the Australian and New Zealand College of Perfusionists (ANZCP). The final examination for a clinical perfusionist is administered by the ANZCP over two days. This involves three hours of written assessment, two hours of multiple choice questions, and four half hour viva voce. Perfusion training is determined by the hospital at which the perfusionist is employed and may involve a hospital accredited training program which is determined by the health department to be the equivalent of ANZCP certification program. In Australia perfusion can also be provided by a medically trained physician who has undertaken additional subspecialty training.

In India, there are different programs for educating perfusionists. A three year bachelor's degree program (most common)with one year internship, a two year post graduate diploma are available. Bachelor's and masters degree in some reputed institutions (i. e. PGI Chandigarh, AIIMS New Delhi, jipmer, Gandhi Medical College, Bhopal, naryana groups Bangalore, Sawai Mansingh Medical College Jaipur, Sher e Kashmir Institute of Medical Sciences, Srinagar). Recently, the Board of Cardiovascular Perfusion of India introduced certification.

In China, Egypt, and some South American countries, a clinical perfusionist is a medical doctor who has completed subspecialty training. In Argentina, a perfusionist is a medical doctor, usually a cardiologist, who has undertaken additional sub specialty training. They are often referred to as hemodinamistas (hemodynamics specialists).