1. Mexican Hispanics show significant improvement in lung function approximately 1 year after having severe COVID‐19.
- Author
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Cortes‐Telles, Arturo, Solís‐Díaz, Luis Alberto, Mateos‐Toledo, Heidegger, Guenette, Jordan A., and Zavorsky, Gerald Stanley
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COMPUTED tomography , *LUNG volume measurements , *CARBON monoxide , *LUNGS , *SPIROMETRY - Abstract
The long‐term effects of COVID‐19 on lung function are not understood, especially for periods extending beyond 1 year after infection. This observational, longitudinal study investigated lung function in Mexican Hispanics who experienced severe COVID‐19, focusing on how the length of recovery affects lung function improvements. At a specialized COVID‐19 follow‐up clinic in Yucatan, Mexico, lung function and symptoms were assessed in patients who had recovered from severe COVID‐19. We used
z ‐scores, and Wilcoxon's signed rank test to analyse changes in lung function over time. Lung function was measured twice in 82 patients: the first and second measurements were taken a median of 94 and 362 days after COVID‐19 diagnosis, respectively. Initially, 61% of patients exhibited at least one of several pulmonary function abnormalities (lower limit of normal = –1.645), which decreased to 22% of patients by 390 days post‐recovery. Considering day‐to‐day variability in lung function, 68% of patients showed improvement by the final visit, while 30% had unchanged lung function from the initial assessment. Computed tomography (CT) scans revealed ground‐glass opacities in 33% of patients. One year after infection, diffusing capacity of the lungs for carbon monoxidez ‐scores accounted for 30% of the variation in CT fibrosis scores. There was no significant correlation between the length of recovery and improvement in lung function based onz ‐scores. In conclusion, 22% of patients who recovered from severe COVID‐19 continued to show at least one lung function abnormality 1 year after recovery, indicating a prolonged impact of COVID‐19 on lung health. [ABSTRACT FROM AUTHOR]- Published
- 2024
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