NPPB and COVID-19: An analysis of the laboratory parameters using the receiver operating characteristic (ROC) showed that NT-pro-BNP, hs-troponin, and procalcitonin were reliable in predicting the mortality outcomes in patients with severe COVID-19 (NT pro-BNP: AUC = 0.720; p = 0.002; 95% CI = 0.595–0.844; hs-troponin: AUC = 0.722; p = 0.002; 95% CI = 0.599–0.846; procalcitonin: AUC = 0.731; p = 0.001; 95% CI = 0.607–0.856) (Figure 4).