One-year follow-up of chest CT findings in patients after SARS-CoV-2 infection

作者：Yanfei Chen, Cheng Ding, Ling Yu, Wanru Guo, Xuewen Feng, Liang Yu, Junwei Su, Ting Xu, Cheng Ren, Ding Shi, Wenrui Wu, Ping Yi, Jun Liu, Jingjing Tao, Guanjing Lang, Yongtao Li, Min Xu, Jifang Sheng, Lanjuan Li, Kaijin Xu · 发表于：BMC Medicine · 年份：2021 · DOI：10.1186/s12916-021-02056-8 · 被引用次数：81 · 研究领域：COVID-19 Clinical Research Studies、Long-Term Effects of COVID-19、Chronic Obstructive Pulmonary Disease (COPD) Research

Abstract Background Knowledge about the 1-year outcome of COVID-19 is limited. The aim of this study was to follow-up and evaluate lung abnormalities on serial computed tomography (CT) scans in patients with COVID-19 after hospital discharge. Methods A prospective cohort study of patients with COVID-19 from the First Affiliated Hospital, Zhejiang University School of Medicine was conducted, with assessments of chest CT during hospitalization and at 2 weeks, 1 month, 3 months, 6 months, and 1 year after hospital discharge. Risk factors of residual CT opacities and the influence of residual CT abnormalities on pulmonary functions at 1 year were also evaluated. Results A total of 41 patients were followed in this study. Gradual recovery after hospital discharge was confirmed by the serial CT scores. Around 47% of the patients showed residual aberration on pulmonary CT with a median CT score of 0 (interquartile range (IQR) of 0–2) at 1 year after discharge, with ground-glass opacity (GGO) with reticular pattern as the major radiologic pattern. Patients with residual radiological abnormalities were older ( p = 0.01), with higher rate in current smokers ( p = 0.04), higher rate in hypertensives ( p = 0.05), lower SaO 2 ( p = 0.004), and higher prevalence of secondary bacterial infections during acute phase ( p = 0.02). Multiple logistic regression analyses indicated that age was a risk factor associated with residual radiological abnormalities (OR 1.08, 95% CI 1.01–1.15, p = 0.02)....