ArticleEuropean radiology2022
Air trapping in COVID-19 patients following hospital discharge: retrospective evaluation with paired inspiratory/expiratory thin-section CT.
Article in European radiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 40 citations in OpenAlex.
- Imaging, Pulmonary Function, and Histopathologic Findings of Persistent Fibrosis in a Longitudinal Cohort 3 Years after COVID-19.Annals of the American Thoracic Society · 2025Article
- The post-COVID-19 pulmonary sequelae: manifestations, mechanisms and treatment strategies.Journal of thoracic disease · 2025Review
- MRI Assessment of Lung Water Density in Individuals Previously Infected With COVID-19: A Cross-Sectional Study.Journal of magnetic resonance imaging : JMRI · 2025Article
- Lung involvement in rheumatoid arthritis, a prospective study.ERJ open research · 2025Article
- Association of clinical and imaging characteristics with pulmonary function testing in patients with Long-COVID.Heliyon · 2024Article
- FOT Technique Applied for Monitoring of COVID-19 Pneumonia Reveals Small Airways Involvement.Diagnostics (Basel, Switzerland) · 2024Article
- Chronic Lung Injury after COVID-19 Pneumonia: Clinical, Radiologic, and Histopathologic Perspectives.Radiology · 2024Review
- CT abnormalities 3 and 12 months after hospitalization for COVID-19 and association with disease severity: A prospective cohort study.PloS one · 2024Article
- Circulating calprotectin levels four months after severe and non-severe COVID-19.BMC infectious diseases · 2023Observational
- Small airway disease in post-acute COVID-19 syndrome, a non-conventional approach in three years follow-up of a patient with long COVID: a case report.Journal of medical case reports · 2023Article
- Inter-relationships among neutrophilic inflammation, air trapping and future exacerbation in COPD: an analysis of ECOPD study.BMJ open respiratory research · 2023Article
- Review
- Long-term Lung Abnormalities Associated with COVID-19 Pneumonia.Radiology · 2023Review
- Pharmacological approaches to pulmonary fibrosis following COVID-19.Frontiers in pharmacology · 2023Review
- Therapeutic trials for long COVID-19: A call to action from the interventions taskforce of the RECOVER initiative.Frontiers in immunology · 2023Review
- Challenges in the Management of Post-COVID-19 Pulmonary Fibrosis for the Latin American Population.Journal of personalized medicine · 2022Article
- Multidimensional 3-Month Follow-Up of Severe COVID-19: Airways beyond the Parenchyma in Symptomatic Patients.Journal of clinical medicine · 2022Article
- Respiratory consequences after COVID-19: outcome and treatment.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2022Review
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
Abstract
objectivesThe study reports our experience with paired inspiration/expiration thin-section computed tomographic (CT) scans in the follow-up of COVID-19 patients with persistent respiratory symptoms.
methodsFrom August 13, 2020, to May 31, 2021, 48 long-COVID patients with respiratory symptoms (27 men and 21 women; median age, 62.0 years; interquartile range: 54.0-69.0 years) underwent follow-up paired inspiration-expiration thin-section CT scans. Patient demographics, length of hospital stay, intensive care unit admission rate, and clinical and laboratory features of acute infection were also included. The scans were obtained on a median of 72.5 days after onset of symptoms (interquartile range: 58.5-86.5) and at least 30 days after hospital discharge. Thin-section CT findings included ground-glass opacity, mosaic attenuation pattern, consolidation, traction bronchiectasis, reticulation, parenchymal bands, bronchial wall thickening, and air trapping. We used a quantitative score to determine the degree of air trapping in the expiratory scans.
resultsParenchymal abnormality was found in 50% (24/48) of patients and included air trapping (37/48, 77%), ground-glass opacities (19/48, 40%), reticulation (18/48, 38%), parenchymal bands (15/48, 31%), traction bronchiectasis (9/48, 19%), mosaic attenuation pattern (9/48, 19%), bronchial wall thickening (6/48, 13%), and consolidation (2/48, 4%). The absence of air trapping was observed in 11/48 (23%), mild air trapping in 20/48 (42%), moderate in 13/48 (27%), and severe in 4/48 (8%). Independent predictors of air trapping were, in decreasing order of importance, gender (p = 0.0085), and age (p = 0.0182).
conclusionsOur results, in a limited number of patients, suggest that follow-up with paired inspiratory/expiratory CT in long-COVID patients with persistent respiratory symptoms commonly displays air trapping. KEY POINTS: • Our experience indicates that paired inspiratory/expiratory CT in long-COVID patients with persistent respiratory symptoms commonly displays air trapping. • Iterative reconstruction and dose-reduction options are recommended for demonstrating air trapping in long-COVID patients.
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