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?:abstract
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Objective To investigate the clinical features of 13 fatal cases of corona virus disease 2019 (COVID-19). Methods The clinical data of 13 patients who died of COVID-19 in Central Theater General Hospital, China, between January 4, 2020, and February 24, 2020, were analyzed retrospectively. The data reviewed included clinical manifestations, laboratory test results, radiographic features and dinical treatment plan. The cellular immune function, the expression of inflammatory factors, and lactate level in deceased patients at different stages of the disease were analyzed. Results Of those who died, the patients consisted of 10 men and 3 women. The age of those who died was (74±19) years, and 10(76.9%) patients were over 70 years old. For the patients who died, 9 presented with underlying diseases, 6(46.2%) of whom had more than 2 diseases. On admission, the chest computed tomography (CT) for 8 patients (61.5%) mainly showed multiple patchy ground-glass opacities. When the disease progressed, the ground-glass opacities rapidly developed into diffuse lesions in both lungs. The lymphocyte and CD3+, CD4+, and CD8+ T lymphocyte counts in the peripheral blood of 13 patients were significantly lower than normal levels and decreased more substantially during the disease course based on the levels when admitted (P<0.01). Additionally, the interleukin (IL)-6, D-dimer, C-reactive protein (CRP), lactic acid levels gradually increased, and most peaked before death. The cause of death for most patients was acute respiratory distress syndrome (ARDS) with type I respiratory failure. Three patients eventually developed multiorgan deficiency syndrome (MODS). Conclusions The risk factors of death for COVID-19 patients included older men, more underlying diseases, poor cellular immune function and over-expression of inflammatory factors. The main cause of death in patients with COVID-19 was ARDS, which led to respiratory failure and MODS.
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