It is an authentic medical test that measures lung capacity and function. This simple test can be performed by anyone above five years of age.
FOT (Forced Oscillation Technique) is a modern and advanced method of assessing airway narrowing. It works on the principle that sound waves of varying frequencies travel different distances through the airway. The lowest frequencies travel the farthest. During this test, multiple low-frequency sound waves are sent down the airways and the time taken for them to reflect back is measured.
This helps in the early diagnosis of asthma, COPD and other lung diseases - often earlier than conventional tests.
The test is simple to perform and requires only gentle breathing, so the airways are not subjected to the physical strain caused by forced breathing maneuvers. Even small children and elderly individuals can perform this test comfortably.
PFT and FOT testing are key components of respiratory medicine. They focus on the prevention, diagnosis and management of diseases affecting the lungs and airways. Sometimes referred to as respirology, respiratory medicine or chest medicine, this field is closely associated with intensive care medicine.