Objective:To investigate long-term symptoms after acute COVID-19,the link between symptoms and respiratory function,radiological changes in the post-COVID period,and risk factors for post-COVID syndrome.Methods:In this cross-sectional study,123 participants who were admitted within the first 3 months were categorized as group 1,and those who applied after 3 months were categorized as group 2.According to thoracic imaging and pulmonary function tests,patients were split into 3 groups as mild,moderate and severe.Results:At least one symptom was present in 91.9%and 61.8%in acute and post-COVID period,respectively.Pulmonary function tests were normal in 60(70.6%)in the first three months,and 30(78.9%)in 91-days to 1-year period after acute COVID-19 infection.After 3 months,22.4%of chest X-rays and 7.9%of computerized tomography revealed progression.Patients who developed acute complications(OR 9.91,95%CI 1.93-50.87),had 2 or more symptoms at admission(OR 7.73,95%CI 2.56-23.33),had 1%to 14%CT involvement(OR 3.05,95%CI 1.06-8.79),or had 50%or more CT involvement(OR 14.68,95%CI 1.24-172.55)had a higher risk of developing post-COVID syndrome.Conclusions:COVID-19 symptoms can last for long time.Severity of symptoms,acute complications,and the extent of radiological involvement may all contribute to elevated risk of post-COVID syndrome.As a result,patients with COVID-19 should be checked for long-term clinical difficulties on regular basis.
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机译：在本期 - 2018年11月：麻醉中心Care Center标准DOT新颖技术对于Patella Luxian Center Dot高血液领先于捕获的塔斯马尼亚魔鬼中心点基线生物化学参数在东部水龙中心DOT控制释放装置在Alpacas Center Dot中铬和锌中的铬控释装置 磁共振与磁性共振射线分析中心点分流与狗手术管理
机译：A Study of the Blue Ocean Strategy in Women’s Clothes Made by Taiwanese Brands : A Case of an Ageless and Fashionable Center =台湾女装品牌蓝海策略之初探：以无龄感时尚生活馆为例
