Heartburn occurs when the lower esophageal sphincter (LES) -- the passageway from your esophagus to your stomach -- relaxes inappropriately and food comes back upward, or when the stomach produces too much acid and this is refluxed into the esophagus.
Source: *U.S. Rehab Aide Job Description. Rehabilitation aides, working under the direct supervision of a physical therapist or assistant, assist in the productive operation of a physical therapy practice. Aides often maintain the treatment area and prep therapy sessions, aiding in the transport of immobile patients.
physical therapy aide. A person trained by a physical therapist or physical therapist assistant to provide clinical support services in physical therapy for tasks that do not require clinical decision making or problem solving in patient care. Physical therapy aides should function with continuous on-site supervision. See also: aide.