Respiratory therapists (RTs) are highly skilled health care professionals. They care for patients by evaluating, treating, and maintaining cardiopulmonary (heart and lung) function. Respiratory therapists have specialized medical expertise and use advanced medical technology. They treat patients with health issues such as; asthma, bronchitis, COPD, emphysema and pneumonia. Respiratory Therapists help patients understand how inhalers work, perform simple breathing tests called Spirometry and provide support for quitting smoking.