Abstract
Airway obstruction at Extra thoracic (central) or intra thoracic (peripheral) level can be satisfactorily diagnosed by recording conventional spirographic tracings using simple standard instruments such as Peak Flow meter and closed spirometer which are easily available in all Hospitals. Ventilatory parameters and certain Ratios derived from them which would permit maximum separation between normal subjects and those with central or peripheral airway obstruction are to be routinely performed in all laboratories for assessment of the site and degree of airway obstruction and treatment. The merits of these different parameters are discussed over here
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Corresponding Author
Dr S. Meenakshi
Retired Professor of Physiology, Madras Medical College, Chennai- 3 600003
At Present as Prof & HOD of Physiology Dept, SRM Dental College, Ramapuram, Chennai- 89
DOI: http://dx.doi.org/10.18535/jmscr/v4i3.14
