Conduct tests on pulmonary or cardiovascular systems of patients for diagnostic purposes. May conduct or assist in electrocardiograms, cardiac catheterizations, pulmonary-functions, lung capacity, and similar tests.

Monitor patients' blood pressure and heart rate using electrocardiogram (EKG) equipment during diagnostic and therapeutic procedures in order to notify the physician if something appears wrong. Monitor patients' comfort and safety during tests, alerting physicians to abnormalities or changes in patient responses. Explain testing procedures to patient to obtain cooperation and reduce anxiety. Prepare reports of diagnostic procedures for interpretation by physician. Observe gauges, recorder, and video screens of data analysis system during imaging of cardiovascular system. Conduct electrocardiogram, phonocardiogram, echocardiogram, stress testing, and other cardiovascular tests to record patients' cardiac activity, using specialized electronic test equipment, recording devices, and laboratory instruments. Prepare and position patients for testing. Obtain and record patient identification, medical history and test results. Attach electrodes to the patients' chests, arms, and legs, connect electrodes to leads from the electrocardiogram (EKG) machine, and operate the EKG machine to obtain a reading. Adjust equipment and controls according to physicians' orders or established protocol. Check, test, and maintain cardiology equipment, making minor repairs when necessary, to ensure proper operation. Supervise and train other cardiology technologists and students. Assist physicians in diagnosis and treatment of cardiac and peripheral vascular treatments, for example, assisting with balloon angioplasties to treat blood vessel blockages. Operate diagnostic imaging equipment to produce contrast enhanced radiographs of heart and cardiovascular system. Inject contrast medium into patients' blood vessels. Observe ultrasound display screen and listen to signals to record vascular information such as blood pressure, limb volume changes, oxygen saturation and cerebral circulation. Assess cardiac physiology and calculate valve areas from blood flow velocity measurements. Compare measurements of heart wall thickness and chamber sizes to standard norms to identify abnormalities. Activate fluoroscope and camera to produce images used to guide catheter through cardiovascular system. Enter factors such as amount and quality of radiation beam, and filming sequence, into computer. Conduct tests of pulmonary system, using spirometer and other respiratory testing equipment

Customer and Personal Service -- Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction. Medicine and Dentistry -- Knowledge of the information and techniques needed to diagnose and treat human injuries, diseases, and deformities. This includes symptoms, treatment alternatives, drug properties and interactions, and preventive health-care measures. English Language -- Knowledge of the structure and content of the English language including the meaning and spelling of words, rules of composition, and grammar. Mathematics -- Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications. Education and Training -- Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects. Computers and Electronics -- Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming. Psychology -- Knowledge of human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders. Physics -- Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub- atomic structures and processes.

Active Listening -- Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times. Reading Comprehension -- Understanding written sentences and paragraphs in work related documents. Instructing -- Teaching others how to do something. Speaking -- Talking to others to convey information effectively. Active Learning -- Understanding the implications of new information for both current and future problem-solving and decision-making. Critical Thinking -- Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems. Time Management -- Managing one's own time and the time of others. Service Orientation -- Actively looking for ways to help people. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Learning Strategies -- Selecting and using training/instructional methods and procedures appropriate for the situation when learning or teaching new things.

Problem Sensitivity -- The ability to tell when something is wrong or is likely to go wrong. It does not involve solving the problem, only recognizing there is a problem. Oral Comprehension -- The ability to listen to and understand information and ideas presented through spoken words and sentences. Speech Clarity -- The ability to speak clearly so others can understand you. Near Vision -- The ability to see details at close range (within a few feet of the observer). Oral Expression -- The ability to communicate information and ideas in speaking so others will understand. Speech Recognition -- The ability to identify and understand the speech of another person. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Inductive Reasoning -- The ability to combine pieces of information to form general rules or conclusions (includes finding a relationship among seemingly unrelated events). Deductive Reasoning -- The ability to apply general rules to specific problems to produce answers that make sense. Perceptual Speed -- The ability to quickly and accurately compare similarities and differences among sets of letters, numbers, objects, pictures, or patterns. The things to be compared may be presented at the same time or one after the other. This ability also includes comparing a presented object with a remembered object.

Assisting and Caring for Others -- Providing personal assistance, medical attention, emotional support, or other personal care to others such as coworkers, customers, or patients. Updating and Using Relevant Knowledge -- Keeping up-to-date technically and applying new knowledge to your job. Communicating with Supervisors, Peers, or Subordinates -- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person. Making Decisions and Solving Problems -- Analyzing information and evaluating results to choose the best solution and solve problems. Interacting With Computers -- Using computers and computer systems (including hardware and software) to program, write software, set up functions, enter data, or process information. Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources. Inspecting Equipment, Structures, or Material -- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects. Identifying Objects, Actions, and Events -- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events. Documenting/Recording Information -- Entering, transcribing, recording, storing, or maintaining information in written or electronic/magnetic form. Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.