Assessment of Long-Term Effects on Pulmonary Functions Between Severe and Non-Severe Convalescent COVID-19 Patients: A Single-Center Study in China

Objective: To explore the long-term effects of SARS-Cov-2 infection on the pulmonary function in the severe convalescent COVID-19 patients for 6 to 9 months follow-up in Beijing, China. Methods: A total of 64 cases of COVID-19 patients were recruited for the study and discharged from the Beijing Dit...

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Bibliographic Details
Published in:Journal of inflammation research 2022-01, Vol.15, p.4751-4761
Main Authors: Tang, Yan-Fen, Han, Jun-Yan, Ren, Ai-Min, Chen, Li, Xue, Tian-Jiao, Yan, Yong-Hong, Wang, Xi, Wang, Yu, Jin, Rong-Hua
Format: Article
Language:English
Subjects:
Antibodies
Blood
Carbon monoxide
Chest
chest ct
Coronaviruses
COVID-19
Diffusion
follow-up
Health aspects
Immunoglobulin G
Immunoglobulin M
Infection
Infections
Laboratories
Long-term effects
Medical examination
Medical research
Medicine, Experimental
Nodules
Original Research
Patients
Pneumonia
pulmonary function
Pulmonary function tests
Respiratory diseases
Respiratory function
sars-cov-2 antibody
Severe acute respiratory syndrome coronavirus 2
severe patients
Statistical analysis
Ventilators
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Summary:Objective: To explore the long-term effects of SARS-Cov-2 infection on the pulmonary function in the severe convalescent COVID-19 patients for 6 to 9 months follow-up in Beijing, China. Methods: A total of 64 cases of COVID-19 patients were recruited for the study and discharged from the Beijing Ditan Hospital, Capital Medical University, for 6 to 9 months. COVID-19 patients were divided into non-severe (mild and moderate) and severe groups. The follow-up investigated the lung function tests, the novel coronavirus antibody (IgM and IgG), chest CT and blood tests. Results: About 25.00% (16/64) patients had pulmonary ventilation dysfunction and 35.9% (23/64) had diffusion dysfunction. In the severe group, 56.50% (13/23) individuals showed decreased diffusion function. The diffusion dysfunction of the severe group was significantly decreased than the non-severe group (P = 0.01). Among 56 cases, the positive rate of IgG titers was 73.2% (41/56). The result of chest CT showed 55.36% (31/56) cases in nodules, 44.64% (25/56) in strip-like changes, 37.5% (21/56) in-ground glass shadow, and 5.36% (3/56) in grid shadow, which was significantly different between the severe group and the non-severe group. Patients tended to have ground glass changes in the severe group while nodules in the non-severe group. Conclusion: For the 6 to 9 months in convalescent COVID-19 patients, 56.50% (13/23) of severe patients had pulmonary diffusion dysfunction. Convalescent COVID-19 patients should have their pulmonary function regularly tested, especially those with severe illness. Keywords: COVID-19, pulmonary function, SARS-CoV-2 antibody, severe patients, chest CT, follow-up
ISSN:1178-7031
1178-7031
DOI:10.2147/JIR.S371283