A hospital-based study to assess various biomarkers for prognostic prediction of clinical outcome in COVID-19 disease.

COVID-19 pandemic has inflicted a painful unforgettable number of deaths throughout the world. Hematological inflammatory and organ-specific biomarkers are universally practiced in helping clinical decisions in various infectious diseases. Accordingly, their role in predicting progression and severity, and fatal outcome of COVID-19 was investigated to take initial appropriate treatment measures to reduce associated mortality. MethodsThe retrospective analysis of a total of 126 COVID-19 cases representing mild, moderate, severe, and succumbed cases were assessed for the pattern of hematological, inflammatory, and organ-specific biomarkers. ResultsA total of 126 proven cases of SARS-CoV-2 infection were retrospectively analyzed for the association of various biomarkers with the COVID-19 disease progression. The CBC analysis showed that the median TLC was high for the severe group of both males (12.49 x 103/l) and females (14.23 x103/l). Similarly, the neutrophil count was also found high in the severe group, whereas the monocytes count showed low median values in severe cases, but both these parameters had no significant difference among the males and the females. The platelet count showed a significant difference (p=0.018) among the non-severe and severe groups between males and females. Among inflammatory markers, D-dimer, CRP, LDH, and APTT showed a higher median value in severe cases among both the males and females while ESR value was higher in non-severe cases and ferritin showed similar values in both severe and non-severe cases. The liver and kidney function parameters were also analyzed and a significant P-value was found for ALP (p=0.004), ALT (p=0.032), and AST (p=0.009) in the non-severe vs. severe category of COVID-19 patients. DiscussionHigh TLC, neutrophilia, lymphopenia, thrombocytopenia, and eosinopenia are the potential risk factor for the progression of COVID-19 disease for severe and fatal outcomes. Inflammatory markers of D-dimer, CRP, LDH, APTT, and ferritin above normal range also carries the potential risk of severe and fatal outcome in COVID-19 disease. Higher ALT, AST, and serum creatinine may also carry a poor prognosis.