FEV1 : Forced Expiratory Volume at one second. This is the volume of gas breathed out during the first second of a maximally forced expiration. There is a poor result if the patient has airways obstruction
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}