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Background: Pulmonary function serves as one of the important measurement tool while studying respiratory disorders and forced spirometry being one of the most effective techniques for assessment of pulmonary disorders. This test provides information on etCO2, peak expiratory flow rate, and forced expiratory volume in the first second (FEV1).
Method: Patients according to selection criteria were divided into 3 groups – Normal, Obstructive and Restrictive with 30 subjects in each group. Each subject was asked to perform spirometer for FEV1, mini wrights peak flow meter for PEFR and capnogram for etCO2.
Results: ANOVA test was done for intergroup comparison between 3 groups and null hypothesis was rejected.
Conclusion: Significant difference was found in expiratory parameters among obstructive and restrictive conditions.