Cardiovascular interventional technologists assist doctors in the diagnosis and treatment of diseases. In this career, your responsibilities are to help doctors perform tests and examine patients with cardiac (heart) and peripheral vascular (blood vessel) diseases. You work in medical labs to perform advanced procedures on the heart, run tests using specialized machinery, and interpret the results of those tests. Your specific duties as a cardiovascular interventional technologist can vary depending on the type of lab in which you work. For example, you may use machinery to take images of a patient’s heart to search for irregularities in a patient and determine what ailments may cause the issue, or you may perform an EKG prior to surgery to ensure a patient is a viable candidate.