Annual change in forced oscillation technique correlates with FEV1 decline in patients with asthma, COPD, and asthma-COPD overlap

The forced oscillation technique (FOT) is used to measure respiratory system resistance and reactance and provides information that cannot be obtained by spirometry. Recent studies indicate that the annual change in FOT correlates with change in FEV1 in patients with asthma and COPD. However, it is not fully understood in patients with ACO. The aim of this study was to investigate the relationship between the annual change in FOT and that in FEV1 in patients with asthma, COPD and ACO.

Source: Journal of Allergy and Clinical Immunology - January 31, 2020 Category: Allergy & Immunology Authors: Yuko Tanaka, Keita Hirai, Hiromasa Nakayasu, Kanami Tamura, Toshihiro Masuda, Shingo Takahashi, Hirofumi Watanabe, Yutaro Kishimoto, Kyohei Oishi, Mika Saigusa, Taisuke Akamatsu, Akito Yamamoto, Satoru Morita, Kazuhiro Asada, Toshihiro Shirai Source Type: research