Laboratory Medicine ›› 2020, Vol. 35 ›› Issue (6): 540-545.DOI: 10.3969/j.issn.1673-8640.2020.06.006

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Relevant factors on short-term critical events in patients with corona virus disease 2019

WANG Bin1, YUAN Xu1, HAN Feng2, TANG Ning1()   

  1. 1. Department of Clinical Laboratory,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,Hubei,China
    2. School of Medicine and Health Management,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,Hubei,China
  • Received:2020-03-13 Online:2020-06-30 Published:2020-07-01

Abstract:

Objective To investigate the factors for short-term critical events in patients with corona virus disease 2019(COVID-19). Methods A total of 73 patients with COVID-19 were enrolled from January 13,2020 to February 15,2020. According to whether these patients used high flow nasal catheter oxygen therapy,non-invasive or invasive respiratory aids,the patients were classified into critical group and non-critical group. The clinical data were collected. The determination results of 14 routine indicators [prothrombin time(PT),activated partial thromboplastin time(APTT),fibrinogen(Fg),thrombin time(TT),D-dimer(DD),antithrombin activity(AT),white blood cell(WBC) count,lymphocyte(Ly) count,platelet(PLT) count,C-reactive protein(CRP),alanine aminotransferase(ALT),aspartate aminotransferase(AST),blood urea nitrogen(BUN) and serum creatinine(Cr)] at admission,>1-≤4 d and >4-≤8 d and clinical outcome data(observed until March 6,2020) were collected. The differences in the 2 groups were compared. The risk factors of short-term critical events in COVID-19 patients were analyzed by receiver operating characteristic(ROC) curve analysis. Results The age,number of diabetes mellitus cases and death rate in critical group were higher than those in non-critical group(P<0.05). The levels of PT,DD,WBC count,CRP,AST and BUN in critical group at the 3 stages were higher than those in non-critical group(P<0.05). For different courses,APTT,Fg,TT,AT,Ly count,PLT count and Cr had statistical significance between critical group and non-critical group(P<0.05). The level of ALT had no statistical significance at the 3 stages between the 2 groups(P>0.05). DD and PLT count were independent risk factors and independent protective factors for short-term critical events. ROC curve analysis indicated that the areas under curves(AUC) of DD,PLT count and DD+PLT count were 0.820 [95% confidence interval(CI) 0.739-0.902],0.764(95%CI 0.652-0.876) and 0.809(95%CI 0.704-0.915),respectively. The sensitivities of DD,PLT count and DD+PLT count were 67.4%,85.8% and 67.9%,and the specificities were 93.7%,60.7% and 86.8%,respectively. Conclusions DD and PLT count have relations with the occurrence of short-term critical events in patients with COVID-19.

Key words: Corona virus disease 2019, Short-term critical event, D-dimer, Platelet count

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