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Respiratory therapists care for patients who have trouble breathing from a chronic respiratory diseases, such as asthma or emphysema. Respiratory therapists need at least an associates degree, but employers may prefer applicants who have a bachelors degree. Courses deal with therapeutic and diagnostic procedures and tests, equipment, patient assessment, and cardiopulmonary resuscitation (CPR). In addition to coursework, programs have clinical rotations that allow respiratory therapists to gain practical experience in treating patients. Average salaries in 2015 were about $57,790 per year, and employment of respiratory therapists is projected to grow 12% yearly through 2025.

Licensure requirements in most states include passing a state or professional certification exam. The National Board for Respiratory Care (NBRC) offers two levels of certification: Certified Respiratory Therapist (CRT) and Registered Respiratory Therapist. CRT is the first-level certification. Applicants must have earned an associate's degree from an accredited respiratory therapy program, or completed a bachelors degree program, and pass an exam. The second-level certification is RRT certification, for candidates with several years of experience as a certified respiratory therapist.