Perfusionists are often paid higher salaries due to the highly specialized and critical nature of their role in cardiac and thoracic surgeries. They are responsible for operating and monitoring life-support equipment such as heart-lung machines, which require extensive training, precision, and quick decision-making skills. Additionally, perfusionists frequently work long hours, including overtime, overnight shifts, and being on call to respond to emergencies, which increases their workload and stress levels. In some regions like Canada, they also receive additional compensation, known as 'primes,' for working in high-risk environments such as ECMO (extracorporeal membrane oxygenation) procedures or intensive care units. The combination of specialized expertise, high responsibility, and demanding work schedules justifies their higher compensation.