ArticleInternational journal of chronic obstructive pulmonary disease2016
Accuracy of forced oscillation technique to assess lung function in geriatric COPD population.
Article in International journal of chronic obstructive pulmonary disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01553812 (The Assessment of Airway Resistance and Airtrapping in Elderly COPD Patients by Forced Oscillation Technique), which is not on this map. Cited by 17 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Assessment of Airway Resistance and Airtrapping in Elderly COPD Patients by Forced Oscillation Technique (FOT)
Who cites it
17 citing papers in PubMed, 34 citations in OpenAlex.
- Application of the Forced Oscillation Technique in Patients With Preserved Ratio Impaired Spirometry.Cureus · 2026Article
- Small Airway Dysfunction in Chronic Obstructive Pulmonary Disease Pathology: Assessment and Clinical Implications.Tuberculosis and respiratory diseases · 2026Article
- Beyond the Spirometry: New Diagnostic Modalities in Chronic Obstructive Pulmonary Disease.Tuberculosis and respiratory diseases · 2025Article
- Long COVID symptoms after 8-month recovery: persistent static lung hyperinflation associated with small airway dysfunction.Respiratory research · 2024Observational
- Diagnostic Potential of Oscillometry: A Population-based Approach.American journal of respiratory and critical care medicine · 2024Article
- Impulse oscillometry and its independent role in the diagnosis of chronic obstructive pulmonary disease.Heliyon · 2024Article
- Clinical significance and applications of oscillometry.European respiratory review : an official journal of the European Respiratory Society · 2022Review
- Pulmonary function testing in COPD: looking beyond the curtain of FEV1.NPJ primary care respiratory medicine · 2021Review
- Distinct Mechanical Properties of the Respiratory System Evaluated by Forced Oscillation Technique in Acute Exacerbation of COPD and Acute Decompensated Heart Failure.Diagnostics (Basel, Switzerland) · 2021Article
- Evaluation of disease severity in bronchiectasis using impulse oscillometry.ERJ open research · 2020Article
- Oscillometry and computed tomography findings in patients with idiopathic pulmonary fibrosis.ERJ open research · 2020Article
- Evaluation of Exertional Ventilatory Parameters Using Oscillometry in COPD.International journal of chronic obstructive pulmonary disease · 2020Article
- Oscillation Mechanics, Integer and Fractional Respiratory Modeling in COPD: Effect of Obstruction Severity.International journal of chronic obstructive pulmonary disease · 2020Article
- Association between respiratory impedance measured by forced oscillation technique and exacerbations in patients with COPD.International journal of chronic obstructive pulmonary disease · 2018Article
- Impulse oscillometry system as an alternative diagnostic method for chronic obstructive pulmonary disease.Medicine · 2017Observational
- Spirometry parameters versus forced oscillometry parameters in obstructive airway disease - Is there a correlation?Lung India : official organ of Indian Chest SocietyArticle
- Forced oscillation technique for early detection of the effects of smoking and COPD: contribution of fractional-order modeling.International journal of chronic obstructive pulmonary diseaseArticle
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionPerforming lung function test in geriatric patients has never been an easy task. With well-established evidence indicating impaired small airway function and air trapping in patients with geriatric COPD, utilizing forced oscillation technique (FOT) as a supplementary tool may aid in the assessment of lung function in this population.
aimsTo study the use of FOT in the assessment of airflow limitation and air trapping in geriatric COPD patients. STUDY
designA cross-sectional study in a public hospital in Hong Kong. ClinicalTrials.gov ID: NCT01553812.
methodsGeriatric patients who had spirometry-diagnosed COPD were recruited, with both FOT and plethysmography performed. "Resistance" and "reactance" FOT parameters were compared to plethysmography for the assessment of air trapping and airflow limitation.
resultsIn total, 158 COPD subjects with a mean age of 71.9±0.7 years and percentage of forced expiratory volume in 1 second of 53.4±1.7 L were recruited. FOT values had a good correlation (r=0.4-0.7) to spirometric data. In general, X values (reactance) were better than R values (resistance), showing a higher correlation with spirometric data in airflow limitation (r=0.07-0.49 vs 0.61-0.67), small airway (r=0.05-0.48 vs 0.56-0.65), and lung volume (r=0.12-0.29 vs 0.43-0.49). In addition, resonance frequency (Fres) and frequency dependence (FDep) could well identify the severe type (percentage of forced expiratory volume in 1 second <50%) of COPD with high sensitivity (0.76, 0.71) and specificity (0.72, 0.64) (area under the curve: 0.8 and 0.77, respectively). Moreover, X values could stratify different severities of air trapping, while R values could not.
conclusionFOT may act as a simple and accurate tool in the assessment of severity of airflow limitation, small and central airway function, and air trapping in patients with geriatric COPD who have difficulties performing conventional lung function test. Moreover, reactance parameters were better than resistance parameters in correlation with air trapping.
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