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Industries & Professions /
Cardiovascular technologists assist physicians in diagnosing and treating heart and blood vessel ailments. Depending on their specialties, they operate electrocardiograph machines, perform Holter monitor and stress testing, and assist in cardiac catheterization procedures and ultrasound testing. These tasks help the physicians diagnose heart disease and monitor progress during treatment. There are approximately 51,010 cardiovascular technologists and technicians employed in the United States.