PURPOSE: To investigate the predictive significance of different pneumonia scoring systems in clinical severity and mortality risk of patients with severe novel coronavirus pneumonia . MATERIALS AND

METHODS: A total of 53 cases of severe novel coronavirus pneumonia were confirmed . The APACHE II, MuLBSTA and CURB-65 scores of different treatment methods were calculated, and the predictive power of each score on clinical respiratory support treatment and mortality risk was compared .

RESULTS: The APACHE II score showed the largest area under ROC curve in both noninvasive and invasive respiratory support treatment assessments, which is significantly different from that of CURB-65 . Further, the MuLBSTA score had the largest area under ROC curve in terms of death risk assessment, which is also significantly different from that of CURB-65; however, no difference was noted with the APACHE II score .

CONCLUSION: For patients with COVID, the APACHE II score is an effective predictor of the disease severity and mortality risk . Further, the MuLBSTA score is a good predictor only in terms of mortality risk.