at predicting restrictive pulmonary impairment?
Chest. 1999;115:869-873.) Based on this sort of accuracy, there is a wide a range of margin for errors. The PFT results are comparative; they are standardized for standing height, age and gender, and for ethnic group. This is called the predicted value. Predicted values can be selected by the user from amongst 16 sets for adults, and 13 sets of equations for children and adolescents. You will need more information to comprehend your PFT. For instance, did you have the simple spirometry done in a doctor’s office? This usually measures basic air flow: how well the lungs exhale. Sarcoidosis can obstruct the airways when chest inflammation or enlarged lymph nodes impinge airways. Sarcoid can also reduce the lung volume when airways and lungs are filled with fluids from inflammation. Both these can reduce spirometry values. In a healthy population there is great variation in spirometric values even after taking into account age, height, gender and ethnic group. This underlines the need for
