Author:
Qin Wei,Chen Shi,Zhang Yunxia,Dong Fen,Zhang Zhu,Hu Bingzhu,Zhu Ziyang,Li Fajiu,Wang Xiaojiang,Wang Yimin,Zhen Kaiyuan,Wang Jing,Wan YuLei,Li Hongbo,Elalamy Ismaïl,Li Chenghong,Zhai Zhenguo,Wang Chen
Abstract
ObjectiveTo evaluate pulmonary function and clinical symptoms in coronavirus disease 2019 (COVID-19) survivors within 3 months after hospital discharge, and to identify risk factors associated with impaired lung function.Methods and materialCOVID-19 patients were prospectively followed up with pulmonary function tests and clinical characteristics for 3 months following discharge from a hospital in Wuhan, China between January and February 2020.Results647 patients were included. 87 (13%) patients presented with weakness, 63 (10%) with palpitation and 56 (9%) with dyspnea. Prevalences of the three symptoms were markedly higher in severe patients than non-severe patients (19% versus 10% for weakness, p=0.003; 14% versus 7% for palpitation, p=0.007; 12% versus 7% for dyspnea, p=0.014). Results of multivariable regression showed an increased odd in the ongoing symptoms among severe patients (OR: 1.7, 95%CI: 1.1–2.6, p=0.026) or patients with longer hospital stay (OR: 1.03, 95%CI: 1.00–1.05, p=0.041). Pulmonary function test results were available for 81 patients, including 41 non-severe and 40 severe patients. In this subgroup, 44 (54%) patients manifested abnormal diffusion capacity for carbon monoxide (DLCO) (68% severe versus 42% non-severe patients, p=0.019). Chest CT total severity score (TSS)>10.5 (OR: 10.4; 95%CI: 2.5–44.1; p=0.001) on admission and ARDS (OR: 4.6; 95%CI: 1.4–15.5; p=0.014) were significantly associated with impaired DLCO. Pulmonary interstitial damage may be associated with abnormal DLCO.ConclusionPulmonary function, particularly DLCO, declined in COVID-19 survivors. This decrease was associated with TSS of chest CT >10.5 and ARDS occurrence. Pulmonary interstitial damage might contribute to the imparied DLCO.
Funder
Chinese Academy of Medical Sciences
National Natural Science Foundation of China
Chinese Academy of Engineering emergency research and cultivation project for COVID-19
National Key Research and Development Program of China
Publisher
European Respiratory Society (ERS)
Subject
Pulmonary and Respiratory Medicine
Cited by
92 articles.
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