Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge
Introduction Post-COVID-19 conditions (PCC) may include pulmonary sequelae, fatigue and other symptoms, but its mechanisms are not fully elucidated.Objective This study investigated the correlation between fatigue and the presence of pulmonary abnormalities in PCC patients with respiratory involveme...
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BMJ Publishing Group
2025-07-01
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| author | Paulo A Lotufo Juliana C Ferreira Eloisa Bonfa Anna S Levin Rodrigo Caruso Chate Marta Imamura Esper G Kallas Roger Chammas Thais Mauad Izabel Marcilio Nelson Gouveia Ricardo Nitrini José Eduardo Krieger Marcio Valente Yamada Sawamura Carlos Roberto Ribeiro de Carvalho Cristiano Gomes Jorge Hallak Luis Yu Marcio Mancini Maria Elizabeth Rossi Thiago Avelino-Silva Edivaldo M Utiyama Aluisio C Segurado Beatriz Perondi Anna Miethke-Morais Amanda C Montal Leila Harima Solange R G Fusco Marjorie F Silva Marcelo C Rocha Carolina Carmo Clarice Tanaka Julio F M Marchini Thaís Guimarães Ester Sabino Tarcisio E P Barros-Filho Celina Almeida Lamas João Marcos Salge Cesar Higa Nomura Adriana L Araújo Bruno F Guedes Carolina S Lázari Cassiano C Antonio Claudia C Leite Emmanuel A Burdmann Euripedes C Miguel Fabio R Pinna Geraldo F Busatto Giovanni G Cerri Heraldo P Souza Izabel C Rios Larissa S Oliveira Linamara R Batisttella Marcello M C Magri Maura S Oliveira Orestes V Forlenza Ricardo F Bento Rodolfo F Damiano Rossana P Francisco Wilson J Filho Mateus Satoru Kajiwara Luis Augusto Visani de Luna Thais Suemi Yokoyama Pedro Rizzi de Oliveira Maria Amelia de Jesus Vilson C Junior |
| author_facet | Paulo A Lotufo Juliana C Ferreira Eloisa Bonfa Anna S Levin Rodrigo Caruso Chate Marta Imamura Esper G Kallas Roger Chammas Thais Mauad Izabel Marcilio Nelson Gouveia Ricardo Nitrini José Eduardo Krieger Marcio Valente Yamada Sawamura Carlos Roberto Ribeiro de Carvalho Cristiano Gomes Jorge Hallak Luis Yu Marcio Mancini Maria Elizabeth Rossi Thiago Avelino-Silva Edivaldo M Utiyama Aluisio C Segurado Beatriz Perondi Anna Miethke-Morais Amanda C Montal Leila Harima Solange R G Fusco Marjorie F Silva Marcelo C Rocha Carolina Carmo Clarice Tanaka Julio F M Marchini Thaís Guimarães Ester Sabino Tarcisio E P Barros-Filho Celina Almeida Lamas João Marcos Salge Cesar Higa Nomura Adriana L Araújo Bruno F Guedes Carolina S Lázari Cassiano C Antonio Claudia C Leite Emmanuel A Burdmann Euripedes C Miguel Fabio R Pinna Geraldo F Busatto Giovanni G Cerri Heraldo P Souza Izabel C Rios Larissa S Oliveira Linamara R Batisttella Marcello M C Magri Maura S Oliveira Orestes V Forlenza Ricardo F Bento Rodolfo F Damiano Rossana P Francisco Wilson J Filho Mateus Satoru Kajiwara Luis Augusto Visani de Luna Thais Suemi Yokoyama Pedro Rizzi de Oliveira Maria Amelia de Jesus Vilson C Junior |
| collection | DOAJ |
| description | Introduction Post-COVID-19 conditions (PCC) may include pulmonary sequelae, fatigue and other symptoms, but its mechanisms are not fully elucidated.Objective This study investigated the correlation between fatigue and the presence of pulmonary abnormalities in PCC patients with respiratory involvement 6–12 months after hospitalisation.Design Cross-sectional study.Setting A tertiary hospital in Brazil.Participants 315 patients, aged ≥18 years, were considered eligible based on SARS-CoV-2 infection confirmed by reverse transcription-PCR.Methods Pulmonary function tests (PFT), cardiopulmonary exercise tests (CPET), chest CT and hand grip were performed. The following scales were applied: Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) scale, Euroqol 5 Dimensions quality of life (EQ-5D) and Hospital Anxiety and Depression Scale (HADS). Participants were divided between the fatigue group (FACIT-F≤30) and the non-fatigue group (FACIT-F>30). For the statistical analysis, the primary outcome was the difference in the diffusing capacity of the lungs for carbon monoxide (DLCO) between groups. Considered secondary outcomes were differences in PFT, CPET, chest CT, hand grip, EQ-5D and HADS.Results The fatigue group had 81 patients (25.7%) against 234 (74.3%). PFT and CPET showed no significant difference in DLCO and oxygen consumption peak values between groups. The fatigue group had a lower workload (mean 55.3±21.3 watts vs 66.5±23.2 watts, p=0.003), higher breathing reserve (median 41.9% (33.8–52.5) vs 37.7% (28.9–47.1), p=0.028) and lower prevalence of ground glass opacity (60.8% vs 77.7%, p=0.003) and reticulation (36.7% vs 54.9%, p=0.005) in chest CT. The fatigue group had higher anxiety (57% vs 24%, p<0.001), depression (50.6% vs 13.6%, p<0.001), lower health-related quality of life (median 50 (32–63) vs 80 (61.3–88.3), p<0.001) and lower hand grip strength (median 15.8 (6–21) kgf vs 21 (12.1–30) kgf, p<0.001).Conclusion Fatigue in patients with PCC 6–12 months after hospitalisation is relatively common and had weak correlation with pulmonary disorders. Our results suggested fatigue could be strongly related with peripheral disorders such as reduced musculoskeletal strength or psychosocial limitations. |
| format | Article |
| id | doaj-art-c53438e752214ffc80462ee82e68e80e |
| institution | DOAJ |
| issn | 2044-6055 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | BMJ Publishing Group |
| record_format | Article |
| series | BMJ Open |
| spelling | doaj-art-c53438e752214ffc80462ee82e68e80e2025-08-20T03:12:27ZengBMJ Publishing GroupBMJ Open2044-60552025-07-0115710.1136/bmjopen-2024-097338Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge Paulo A LotufoJuliana C FerreiraEloisa BonfaAnna S LevinRodrigo Caruso Chate0Marta Imamura1Esper G KallasRoger ChammasThais MauadIzabel MarcilioNelson GouveiaRicardo NitriniJosé Eduardo KriegerMarcio Valente Yamada Sawamura2Carlos Roberto Ribeiro de Carvalho3Cristiano GomesJorge HallakLuis YuMarcio ManciniMaria Elizabeth RossiThiago Avelino-SilvaEdivaldo M UtiyamaAluisio C SeguradoBeatriz PerondiAnna Miethke-MoraisAmanda C MontalLeila HarimaSolange R G FuscoMarjorie F SilvaMarcelo C RochaCarolina CarmoClarice TanakaJulio F M MarchiniThaís GuimarãesEster SabinoTarcisio E P Barros-FilhoCelina Almeida Lamas4João Marcos Salge5Cesar Higa NomuraAdriana L AraújoBruno F GuedesCarolina S LázariCassiano C AntonioClaudia C LeiteEmmanuel A BurdmannEuripedes C MiguelFabio R PinnaGeraldo F BusattoGiovanni G CerriHeraldo P SouzaIzabel C RiosLarissa S OliveiraLinamara R BatisttellaMarcello M C MagriMaura S OliveiraOrestes V ForlenzaRicardo F BentoRodolfo F DamianoRossana P FranciscoWilson J FilhoMateus Satoru Kajiwara6Luis Augusto Visani de Luna7Thais Suemi Yokoyama8Pedro Rizzi de Oliveira9Maria Amelia de JesusVilson C JuniorInstituto de Radiologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilDepartment of Legal Medicine, Bioethics, Occupational Medicine and Physical Medicine and Rehabilitation, Universidade de São Paulo, São Paulo, SP, BrazilInstituto de Radiologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilInstituto do Coração, Divisão de Pneumologia, Universidade de São Paulo Hospital das Clínicas, São Paulo, São Paulo, BrazilIntroduction Post-COVID-19 conditions (PCC) may include pulmonary sequelae, fatigue and other symptoms, but its mechanisms are not fully elucidated.Objective This study investigated the correlation between fatigue and the presence of pulmonary abnormalities in PCC patients with respiratory involvement 6–12 months after hospitalisation.Design Cross-sectional study.Setting A tertiary hospital in Brazil.Participants 315 patients, aged ≥18 years, were considered eligible based on SARS-CoV-2 infection confirmed by reverse transcription-PCR.Methods Pulmonary function tests (PFT), cardiopulmonary exercise tests (CPET), chest CT and hand grip were performed. The following scales were applied: Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F) scale, Euroqol 5 Dimensions quality of life (EQ-5D) and Hospital Anxiety and Depression Scale (HADS). Participants were divided between the fatigue group (FACIT-F≤30) and the non-fatigue group (FACIT-F>30). For the statistical analysis, the primary outcome was the difference in the diffusing capacity of the lungs for carbon monoxide (DLCO) between groups. Considered secondary outcomes were differences in PFT, CPET, chest CT, hand grip, EQ-5D and HADS.Results The fatigue group had 81 patients (25.7%) against 234 (74.3%). PFT and CPET showed no significant difference in DLCO and oxygen consumption peak values between groups. The fatigue group had a lower workload (mean 55.3±21.3 watts vs 66.5±23.2 watts, p=0.003), higher breathing reserve (median 41.9% (33.8–52.5) vs 37.7% (28.9–47.1), p=0.028) and lower prevalence of ground glass opacity (60.8% vs 77.7%, p=0.003) and reticulation (36.7% vs 54.9%, p=0.005) in chest CT. The fatigue group had higher anxiety (57% vs 24%, p<0.001), depression (50.6% vs 13.6%, p<0.001), lower health-related quality of life (median 50 (32–63) vs 80 (61.3–88.3), p<0.001) and lower hand grip strength (median 15.8 (6–21) kgf vs 21 (12.1–30) kgf, p<0.001).Conclusion Fatigue in patients with PCC 6–12 months after hospitalisation is relatively common and had weak correlation with pulmonary disorders. Our results suggested fatigue could be strongly related with peripheral disorders such as reduced musculoskeletal strength or psychosocial limitations.https://bmjopen.bmj.com/content/15/7/e097338.full |
| spellingShingle | Paulo A Lotufo Juliana C Ferreira Eloisa Bonfa Anna S Levin Rodrigo Caruso Chate Marta Imamura Esper G Kallas Roger Chammas Thais Mauad Izabel Marcilio Nelson Gouveia Ricardo Nitrini José Eduardo Krieger Marcio Valente Yamada Sawamura Carlos Roberto Ribeiro de Carvalho Cristiano Gomes Jorge Hallak Luis Yu Marcio Mancini Maria Elizabeth Rossi Thiago Avelino-Silva Edivaldo M Utiyama Aluisio C Segurado Beatriz Perondi Anna Miethke-Morais Amanda C Montal Leila Harima Solange R G Fusco Marjorie F Silva Marcelo C Rocha Carolina Carmo Clarice Tanaka Julio F M Marchini Thaís Guimarães Ester Sabino Tarcisio E P Barros-Filho Celina Almeida Lamas João Marcos Salge Cesar Higa Nomura Adriana L Araújo Bruno F Guedes Carolina S Lázari Cassiano C Antonio Claudia C Leite Emmanuel A Burdmann Euripedes C Miguel Fabio R Pinna Geraldo F Busatto Giovanni G Cerri Heraldo P Souza Izabel C Rios Larissa S Oliveira Linamara R Batisttella Marcello M C Magri Maura S Oliveira Orestes V Forlenza Ricardo F Bento Rodolfo F Damiano Rossana P Francisco Wilson J Filho Mateus Satoru Kajiwara Luis Augusto Visani de Luna Thais Suemi Yokoyama Pedro Rizzi de Oliveira Maria Amelia de Jesus Vilson C Junior Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge BMJ Open |
| title | Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge |
| title_full | Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge |
| title_fullStr | Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge |
| title_full_unstemmed | Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge |
| title_short | Correlation between fatigue and pulmonary involvement in the post-COVID-19 condition: a cross-sectional study 6–12 months after hospital discharge |
| title_sort | correlation between fatigue and pulmonary involvement in the post covid 19 condition a cross sectional study 6 12 months after hospital discharge |
| url | https://bmjopen.bmj.com/content/15/7/e097338.full |
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