Clinical application of the forced oscillation technique

Toshihiro Shirai, Hajime Kurosawa

Research output: Contribution to journalReview articlepeer-review

74 Citations (Scopus)


The forced oscillation technique (FOT) is a noninvasive method with which to measure respiratory system resistance and reactance during tidal breathing. Recently, its clinical application has spread worldwide with the expansion of commercially available broadband frequency FOT devices, including MostGraph and Impulse Oscillometry. An increasing number of reports have supported the usefulness of the FOT in the management of asthma and chronic obstructive pulmonary disease (COPD). However, the FOT is not a surrogate test for spirometry, but should be used complementarily. Furthermore, reference values are not necessarily available and the interpretation of some measured data is controversial. There is a need to update the international statement for not only technical aspects but also the clinical use of the FOT. In this review, we summarize the previously published studies and discuss how to use the FOT in a clinical setting.

Original languageEnglish
Pages (from-to)559-566
Number of pages8
JournalInternal Medicine
Issue number6
Publication statusPublished - 2016 Mar 15


  • Forced oscillation technique
  • Impedance
  • Mechanics
  • Reactance
  • Resistance

ASJC Scopus subject areas

  • Internal Medicine


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