Oscillometry: clinical significance and applications

Oscillometry (the forced oscillation technique) is widely used in the Russian Federation. It is a simple, noninvasive functional diagnostic test that offers unique advantages in cases where spirometry and other pulmonary function tests are not appropriate, such as in young children, debilitated patients, or patients with physical and cognitive barriers to performing tests that require effort and coordination.The aim of this study was to analyze scientific literature data and our own results and to evaluate the significance and applications of oscillometry in clinical practice. The review examined the physiological principles of oscillometry and the basis for interpreting the results. Oscillometry is now recognized as a sensitive diagnostic tool for assessing airway resistance. This article describes sensitivity of the method for bronchodilation and bronchoprovocation tests, as well as its response to drug treatment, especially in asthma and chronic obstructive pulmonary disease. Oscillometry is a useful tool for diagnosing obstructive ventilation disorders. It should be used as an addition to spirometry to clarify phenotypes of small airways diseases. However, despite its great promise as a useful diagnostic tool, further evidence of its clinical utility in restrictive conditions is needed.Conclusion. Thus, oscillometry can be considered an addition and sometimes an alternative to spirometry and bronchodilation test, since it is well standardized. The test results are highly reproducible, the study does not require maximum effort, and the test is carried out during spontaneous tidal breathing.