title: The expiratory rate during the third quarter of a maximal forced expiration (E50-75). A useful index of obstructive pulmonary disease.
mesh_terms: D045853:Exhalation; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis*; D008173:Lung Diseases, Obstructive; D012119:Respiration / Q000502:physiology*
keywords: LUNG DISEASES/diagnosis; RESPIRATION/physiology