Colored 3-Dimensional Analyses of Respiratory Resistance and Reactance in COPD and Asthma

Mori, Kazutaka; Shirai, Toshihiro; Mikamo, Masashi; Shishido, Yoshihiro; Akita, Takefumi; Morita, Satoru; Asada, Kazuhiro; Fujisawa, Masato; Suda, Takafumi; Chida, Kingo

doi:10.3109/15412555.2011.626818

Cited by 69 publications

(101 citation statements)

References 13 publications

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“…For the purpose of detecting a treatment effect or daily fluctuations, minimal clinically important differences in the FOT parameters should be established. R20 also correlates with FEV1 in asthma, but more weakly than R5 (12,13,18). There was no correlation between R20 and delta N2 in asthma (18), or between R20 and FEV1 in COPD (12).…”

Section: Rrsmentioning

confidence: 86%

“…R20 also correlates with FEV1 in asthma, but more weakly than R5 (12,13,18). There was no correlation between R20 and delta N2 in asthma (18), or between R20 and FEV1 in COPD (12). There was no difference in R20 among patients with COPD, asthma, and healthy controls (12).…”

Section: Rrsmentioning

confidence: 89%

“…There was no correlation between R20 and delta N2 in asthma (18), or between R20 and FEV1 in COPD (12). There was no difference in R20 among patients with COPD, asthma, and healthy controls (12). In contrast to these, a study found that R20 had the most clinical significance, including the severity, impaired control, quality of life, and frequent exacerbation of the disease (19).…”

Section: Rrsmentioning

confidence: 92%

“…Although both Rrs and the forced expiratory volume in 1 second (FEV1) can be indices of airway obstruction, the FOT and spirometry are not the same modality, and therefore, Rrs and FEV1 are not necessarily identical or closely related. Indeed, in general, R5 only moderately correlates with FEV1 in asthma and COPD (12,13). R5 is higher in patients with COPD than in healthy controls, but not in those with asthma (12,14).…”

Section: Rrsmentioning

confidence: 99%

“…Indeed, in general, R5 only moderately correlates with FEV1 in asthma and COPD (12,13). R5 is higher in patients with COPD than in healthy controls, but not in those with asthma (12,14).…”

Section: Rrsmentioning

confidence: 99%

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Clinical Application of the Forced Oscillation Technique

Shirai

Kurosawa

2016

Intern. Med.

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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.

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Section: Rrsmentioning

confidence: 86%

Section: Rrsmentioning

confidence: 89%

Section: Rrsmentioning

confidence: 92%

Section: Rrsmentioning

confidence: 99%

“…Indeed, in general, R5 only moderately correlates with FEV1 in asthma and COPD (12,13). R5 is higher in patients with COPD than in healthy controls, but not in those with asthma (12,14).…”

Section: Rrsmentioning

confidence: 99%

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