ArticleScientific reports2018
New Spirometry Indices for Detecting Mild Airflow Obstruction.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed.
- Emphysema Severity Index: a new spirometric parameter in epidemiology.ERJ open research · 2026Article
- Morphological Analysis of the Flow-Volume Curve for Identifying Fixed Airflow Obstruction: A Scoping Review.Advances in respiratory medicine · 2026Article
- Early Functional Impairment in Smokers with CT-Detected Emphysema: Spirometry Provides Complementary Physiological Information in Lung Cancer Screening.Biomedicines · 2026Article
- Pre-COPD: Impact on prevention, detection, and treatment.Presse medicale (Paris, France : 1983) · 2026Review
- Clinical significance of a flattening index derived from the flow-volume loop.Frontiers in physiology · 2026Article
- Concavity of the maximal expiratory flow-volume curve, and incidence of COPD and respiratory symptoms: a population-based cohort study.ERJ open research · 2026Article
- Expiratory Time Constants in Patients Undergoing Routine Spirometry.CHEST pulmonary · 2025Article
- The Application of Ultrasonography in the Detection of Airway Obstruction: A Promising Area of Research or Unnecessary Gadgetry?Life (Basel, Switzerland) · 2025Review
- Establishment and application of reference equations for FEFJournal of thoracic disease · 2024Article
- Curve-Modelling and Machine Learning for a Better COPD Diagnosis.International journal of chronic obstructive pulmonary disease · 2024Observational
- Optimal Threshold of FEVAmerican journal of respiratory and critical care medicine · 2023Article
- Parameter D: New Measure of Airflow Obstruction.Annals of the American Thoracic Society · 2023Article
- Article
- Comparison of New Spirometry Measures to Diagnose COPD.Respiratory care · 2023Article
- Principal component analysis of flow-volume curves in COPDGene to link spirometry with phenotypes of COPD.Respiratory research · 2023Article
- The Challenges of Spirometric Diagnosis of COPD.Canadian respiratory journal · 2023Review
- Deep learning using multilayer perception improves the diagnostic acumen of spirometry: a single-centre Canadian study.BMJ open respiratory research · 2022Article
- Significance of FEVChest · 2022Observational
- Treatment Trials in Young Patients with Chronic Obstructive Pulmonary Disease and Pre-Chronic Obstructive Pulmonary Disease Patients: Time to Move Forward.American journal of respiratory and critical care medicine · 2022Review
- Challenges in Diagnosing Occupational Chronic Obstructive Pulmonary Disease.Medicina (Kaunas, Lithuania) · 2021Review
Corrections and comments
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Authors and funding
14 authors.
Funding
Abstract
The diagnosis of chronic obstructive pulmonary disease (COPD) relies on demonstration of airflow obstruction. Traditional spirometric indices miss a number of subjects with respiratory symptoms or structural lung disease on imaging. We hypothesized that utilizing all data points on the expiratory spirometry curves to assess their shape will improve detection of mild airflow obstruction and structural lung disease. We analyzed spirometry data of 8307 participants enrolled in the COPDGene study, and derived metrics of airflow obstruction based on the shape on the volume-time (Parameter D), and flow-volume curves (Transition Point and Transition Distance). We tested associations of these parameters with CT measures of lung disease, respiratory morbidity, and mortality using regression analyses. There were significant correlations between FEV
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