Gas Exchange Impairment During COVID-19 Recovery
| Autor: | Mónica Silva-Cerón, Luis Torre-Bouscoulet, Paul L. Enright, Laura Gochicoa-Rangel, Víctor Hernández-Morales, Irlanda Alvarado-Amador, Aloisia Paloma Hernández-Morales, Carlos Guzmán-Valderrábano, Adela Durán-Cuellar, Wilmer Madrid-Mejía, Lya Edith Pensado-Piedra, Antonio Salles-Rojas, Amaury González-Molina, Alejandro Reyes-García, Luis Lozano-Martínez, Isabel Salas-Escamilla |
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| Rok vydání: | 2021 |
| Předmět: |
Pulmonary and Respiratory Medicine
medicine.medical_specialty medicine.medical_treatment Walk Test Critical Care and Intensive Care Medicine Pulmonary function testing Internal medicine medicine Humans Plethysmograph Lung volumes Lung Original Research Mechanical ventilation Pulmonary Gas Exchange SARS-CoV-2 business.industry Pulmonary Diffusing Capacity COVID-19 General Medicine medicine.disease Respiratory Function Tests Pneumonia medicine.anatomical_structure Cardiology Abnormality business |
| Zdroj: | Respir Care |
| ISSN: | 1943-3654 0020-1324 |
| Popis: | BACKGROUND: Persistent impairment of pulmonary function and exercise capacity has been known to last for months or even years in the survivors who recovered from other coronavirus pneumonia. Some reports showed that subjects with coronavirus disease 2019 pneumonia after being discharged could have several sequelae, but there are few studies on gas exchange and exercise capacity complications in these subjects. AIMS: To describe residual gas exchange abnormalities during recovery from coronavirus disease 2019 pneumonia. METHODS: In an observational study, ∼90 d after onset of disease, we scheduled almost 200 subjects for an out-patient visit with pulmonary function testing and computed tomography of the lungs. Lung mechanics by using body plethysmography, gas exchange with diffusing lung capacity for carbon monoxide determined by the single-breath technique (DLCOsb) and diffusing lung capacity for nitric oxide determined by the single-breath technique (DLNOsb), and exercise ability by using the 6-min walk test (6MWT) were measured in the subjects. The results were compared between those who required invasive mechanical ventilation and those who did not. RESULTS: A total of 171 subjects were included, the majority (96%) had signs of residual pneumonia (such as an excess of high attenuation areas) on computed tomography of the lungs. The DLCOSB results were below the lower limit of the normal range in 29.2% of the subjects; during the 6MWT, 67% experienced oxygen desaturation ( S pO 2 ) > 4%; and, in 81 (47%), the dropped below 88%. Subjects who required invasive mechanical ventilation (49.7%) were more likely to have lower lung volumes, more gas exchange abnormality, less exercise capacity and more radiologic abnormality. CONCLUSIONS: Subjects who recovered from severe COVID-19 pneumonia continued to have abnormal lung function and abnormal radiologic findings. |
| Databáze: | OpenAIRE |
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