Pulmonary function test lab systems are the wide range of tests that analyze wellness level of lungs, capacity of taking in and exhale air and efficiency in transferring oxygen into the blood and certain types of lung disease (especially asthma, bronchitis, and emphysema). The information obtained by these tests is highly useful in diagnosing certain types of lung disorders. This information is also highly useful in assessing obstructive lung diseases such as asthma, COPD, and chronic obstructive pulmonary disease.
Lung volume measurement detects restrictive lung diseases. Restrictive lung diseases may be caused by inflammation or scarring of the lung tissue (interstitial lung disease) or by abnormalities of the muscles or skeleton of the chest wall. A person cannot inhale a normal volume of air with this set of diseases. Testing the diffusion capacity (DLCO) allows an assessment of the lungs efficiency that how efficiently the lungs transfer oxygen from the air into the bloodstream. Spirometer measures how well the lungs exhale. Cardiopulmonary exercise testing is performed to evaluate patients with unexplained dyspnea. The other tests include meter-dosed inhaler technique, the proper use of spacers, peak flow monitoring, and airway clearance modalities (such as PEP therapy, flutter valve and postural drainage).
All tests are performed to diagnose and determine the cause of shortness of breath, or to measure whether occupational exposure to contaminants affects lung function. It can also be used after the administration of medications to assess their effect, and to measure progress in disease treatment.
A value is usually considered abnormal if it is less than 80% of the predicted value for that person. Normal values are based upon the age, height, ethnicity, and sex of the person being tested. Abnormal results usually mean that a degree of chest or lung disease.
Pulmonary function tests are performed on both inpatients and outpatients for diagnosis and management of respiratory conditions, pre-operative assessments, disability evaluations.
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