The role of hemogram parameters and C‐reactive protein in predicting mortality in COVID‐19 infection

Abstract

Aim: This study aimed to investigate hemogram parameters and C-reactive protein (CRP) that can be used in clinical practice to predict mortality in hospitalized patients with a diagnosis of COVID-19.Methods: This cohort study was conducted at University Hospital, which is a designated hospital for COVID-19 patients. Adult patients who were admitted to our hospital emergency department with suspected COVID-19 and who were hospitalized in our institution with a COVID-19 diagnosis were analysed.Results: There were 148 patients hospitalized with COVID-19. All-cause mortality of follow-up was 12.8%. There were statistically significant results between the two groups (survivors and nonsurvivors), which were classified based on hospital mortality rates, in terms of the lymphocyte to C-reactive protein ratio (LCRP), systemic immune inflammation index (SII), neutrophil-to-lymphocyte ratio (NLR), platelet-tolymphocyte ratio (PLR), CRP concentration and comorbid disease. In a receiver operating characteristic (ROC), curve analysis, LCRP, NLR, PLR and SII area under the curve (AUC) for in-hospital mortality were 0.817, 0.816, 0.733 and 0.742, respectively. Based on an LCRP value of 1 for in-hospital mortality, the sensitivity and specificity rates were 100% and 86.8%, respectively. Based on the average SII of 2699 for in-hospital mortality, the sensitivity, specificity and accuracy rates were 68.4%, 77.5% and 76.3%, respectively. A total of 19 patients died during hospitalization. All of these patients had an LCRP level ≤ 1; 14 had an NLR level ≤ 10.8; 13 had an SII ≥ 2699 (Fisher's exact test, P = .000). Independent predictors of in-hospital mortality rates were LCRP < 1, PLR, SII ≥ 2699, white blood cell count, CRP, age, comorbidities, and ICU stay. Conclusions:We concluded that inflammatory parameters, such as LRCP, SII and NLR, were associated with disease severity and could be used as potentially important risk factors for COVID-19 progression. What's known• COVID-19 has infected approximately 32 million people.• The patient load has seriously disturbed medical institutions.• There are studies showing that inflammation markers are used as an early warning signal of severe

The role of inflammatory indices in the outcome of COVID-19 cancer patients

“…Therefore, increased both CRP/L and NLPR could be useful prognostic markers for the prediction of poor outcome in adult COVID-19 cancer patients. These data are in agreement with many recent reports concluded that decreased lymphocyte to C-reactive protein ratio is considered a predictor factor for poor outcome and mortality in COVID-19 patients [ 19 , 27 , 28 ]. The CRP is an inflammatory marker that synthesized in the liver, and it is considered an important inflammatory marker for bacterial infection [ 28 ].…”

“…These data are in agreement with many recent reports concluded that decreased lymphocyte to C-reactive protein ratio is considered a predictor factor for poor outcome and mortality in COVID-19 patients [ 19 , 27 , 28 ]. The CRP is an inflammatory marker that synthesized in the liver, and it is considered an important inflammatory marker for bacterial infection [ 28 ]. In addition, it responds to the inflammatory cytokines produced by the activated monocytes or macrophages after infection [ 29 ].…”

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