Effect of Post Inspiratory Pause on Forced Expiratory Vital Capacity Maneuver

摘要

Background: Spirometry is a very useful test in respiratory system evaluation. Maneuvers with no breathhold were associated with greater PEF values in healthy volunteers. But there is very limited data regarding the effect of post inspiratory pause on FEV, FEV1 and FEF 25-75. Objective: To study the effect of post inspiratory pause on FEV, FEV1 and FEF 25-75. Methods: This prospective study was carried out in the Department of Respiratory Medicine, Smt. B. K. Shah Medical Institute & Research Centre, Vadodara, Gujarat from January 2010 to March 2010. The subjects were tested in two sessions, approximately 30 minute apart. In first session FVC maneuver done without any pause and in second session it was done with post inspiratory pause for six seconds. Results: Values of FVC, FEV1 and FEF 25-75 were little higher in maneuver without post inspiratory pause as compared to maneuver with post inspiratory pause. Conclusion: There is no statistically difference in values of all parameter amongst both the maneuvers i.e. with and without post inspiratory pause.