What is it ?

PFT are a group of tests that are performed to assess the functions of the lungs. Measuring the volumes during different phases of breathing, adequacy of airflow in and out of lungs and expanding capabilities or elasticity of lungs can assess the lung functions. Tests can be performed not only to assess the breathing volumes and flows, but also the adequacy of oxygenation of blood that lungs are supposed to carry out. The major types of pulmonary function tests include spirometry, measurement of lung volumes, and quantitation of diffusing capacity usinf small quantity of carbon monoxide. Measurements of maximal respiratory pressures and forced inspiratory flow rates are also useful in specific clinical circumstances Evaluation of lung functions is important in many clinical situations, both when the patient has a history or symptoms suggestive of lung disease, and when risk factors for lung disease are present, such as cigarette smokingparallel in our country before.