Editing Spirometer (section)

==Pulmonary function tests==
{{Main|Pulmonary function testing}}
A spirometer is the main piece of equipment used for basic Pulmonary Function Tests (PFTs). Lung diseases such as [[asthma]], [[bronchitis]], and [[emphysema]] may be ruled out from the tests. In addition, a spirometer often is used for finding the cause of shortness of breath, assessing the effect of contaminants on lung function, the effect of medication, and evaluating progress for disease treatment.<ref>''[https://www.nlm.nih.gov/medlineplus/ency/article/003853.htm Pulmonary function tests]'' URL assessed on 27 December 2009</ref>