Conduct tests on pulmonary or cardiovascular systems of patients for diagnostic, therapeutic, or research purposes. May conduct or assist in electrocardiograms, cardiac catheterizations, pulmonary functions, lung capacity, and similar tests. •Operate diagnostic or therapeutic medical instruments or equipment. •Test patient heart or lung functioning. •Analyze test data or images to inform diagnosis or treatment. •Maintain sterile operative fields. •Explain medical procedures or test results to patients or family members.
