Reference values of impulse oscillometry (IOS) for healthy Chinese children aged 4–17 years

Wu, Jinhong; Zhang, Hao; Shi, Yongsheng; Wang, JinRong; Han, Yuling; Zhang, Qiaoling; Wang, Ning; Li, Sha; Zhang, Yuehua; Zi, Huifen; Wang, Fei; Liu, Aihong; Song, Yuxin; Jia, ChunMei; Feng, Yong; Liu, Quanhua; Li-ya, Wan; Ji, Minghong; Long, Zhen; Huang, Jianfeng; Liu, Li; Sun, Yun; Tang, Suping; Dong, Xiaoyan; Zhou, Xiaojian; Jiang, Wenhui; Shen, Li; Jiang, Haohua

doi:10.1186/s12931-022-02080-z

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…The acceptability and success rate of lung function measured using oscillometry technique in a populationbased cohort of 3-year-old children were good and comparable to previous studies [21], thus confirming that oscillometry is easily performed in pre-school children. In accordance with previous population-based studies [14,25,30], height was observed as an important determinants of respiratory impedance. Mean Zscore values for R 7 and X 7 observed in our population were 0.5 indicating slightly higher values as compared to the population used as reference in Shackleton et al [25].…”

Section: Discussionsupporting

confidence: 91%

Intra-breath changes in respiratory mechanics are sensitive to history of respiratory illness in preschool children: the SEPAGES cohort

Siroux,

Boudier,

Lyon-Caen

et al. 2024

Respir Res

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Background Intra-breath oscillometry has been proposed as a sensitive means of detecting airway obstruction in young children. We aimed to assess the impact of early life wheezing and lower respiratory tract illness on lung function, using both standard and intra-breath oscillometry in 3 year old children. Methods History of doctor-diagnosed asthma, wheezing, bronchiolitis and bronchitis and hospitalisation for respiratory problems were assessed by questionnaires in 384 population-based children. Association of respiratory history with standard and intra-breath oscillometry parameters, including resistance at 7 Hz (R7), frequency-dependence of resistance (R7 − 19), reactance at 7 Hz (X7), area of the reactance curve (AX), end-inspiratory and end-expiratory R (ReI, ReE) and X (XeI, XeE), and volume-dependence of resistance (ΔR = ReE-ReI) was estimated by linear regression adjusted on confounders. Results Among the 320 children who accepted the oscillometry test, 281 (88%) performed 3 technically acceptable and reproducible standard oscillometry measurements and 251 children also performed one intra-breath oscillometry measurement. Asthma was associated with higher ReI, ReE, ΔR and R7 and wheezing was associated with higher ΔR. Bronchiolitis was associated with higher R7 and AX and lower XeI and bronchitis with higher ReI. No statistically significant association was observed for hospitalisation. Conclusions Our findings confirm the good success rate of oscillometry in 3-year-old children and indicate an association between a history of early-life wheezing and lower respiratory tract illness and lower lung function as assessed by both standard and intra-breath oscillometry. Our study supports the relevance of using intra-breath oscillometry parameters as sensitive outcome measures in preschool children in epidemiological cohorts.

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Section: Discussionsupporting

confidence: 91%

Intra-breath changes in respiratory mechanics are sensitive to history of respiratory illness in preschool children: the SEPAGES cohort

Siroux,

Boudier,

Lyon-Caen

et al. 2024

Respir Res

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“…17 IOS may be a potential screening tool for OSA diagnosis as it can detect upper airways stenosis or patency in OSA. 18 However, the relationship between lung function and OSAHS, especially in obese patients, is still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Pulmonary Function Test and Obstructive Sleep Apnea Hypopnea Syndrome in Obese Adults: A Retrospective Study

Ying¹,

Liu²,

Li³

et al. 2023

COPD

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We explore risk factors related to severe obstructive sleep apnea (OSA) in obese patients, including pulmonary ventilation function, diffusion function, and impulse oscillometry (IOS) data. Methods:The medical records of 207 obese patients who were prepared to undergo bariatric surgery in a hospital from May 2020 to September 2021 were retrospectively reviewed. Polysomnography (PSG), pulmonary ventilation function, diffusion function, and IOS parameters were collected according to the ethical standards of the institutional research committee (registration number: KYLL-202008-144). Logistic regression analysis was used to analyze the related independent risk factors. Results: There were significantly statistical difference in a number of pulmonary ventilation and diffusion function parameters among the non-OSAHS group, the mild-to-moderate OSA group, and the severe OSA group. However, only airway resistance parameters R5%, R10%, R15%, R20%, R25%, and R35% increased with increasing OSA severity and were positively correlated with apnea hypopnea index (AHI). Age (P = 0.012, 1.104 (1.022, 1.192)), body mass index (P< 0.0001, 1.12 (1.057, 1.187)), gender (P = 0.003, 4.129 (1.625, 10.49)), and R25% (P = 0.007, 1.018 (1.005, 1.031)) were independent risk factors for severe OSA. In patients aged 35 to 60, RV/TLC (P = 0.029, 1.272 (1.025, 1.577)) is an independent risk factor for severe OSA. Conclusion: R25% was an independent risk factor for severe OSA in obese individuals, while RV/TLC was also an independent risk factor in those aged 35 to 60. Pulmonary function tests (PFTs), particularly IOS levels, are recommended to assess severe OSA in obese patients.

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“…Following publication of the original article [ 1 ], the authors identified that the article note about equal contribution was missing.…”

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confidence: 99%

Correction: Reference values of impulse oscillometry (IOS) for healthy Chinese children aged 4–17 years

Zhang

Shi

et al. 2023

Respir Res

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Reference values of impulse oscillometry (IOS) for healthy Chinese children aged 4–17 years

Cited by 5 publications

References 33 publications

Intra-breath changes in respiratory mechanics are sensitive to history of respiratory illness in preschool children: the SEPAGES cohort

Intra-breath changes in respiratory mechanics are sensitive to history of respiratory illness in preschool children: the SEPAGES cohort

Pulmonary Function Test and Obstructive Sleep Apnea Hypopnea Syndrome in Obese Adults: A Retrospective Study

Correction: Reference values of impulse oscillometry (IOS) for healthy Chinese children aged 4–17 years

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