{"title":"NLR和d -二聚体联合作为COVID-19严重程度的预测工具","authors":"Shofia Widya Murti, D. Prihatni, A. Sugianli","doi":"10.24293/ijcpml.v28i3.1998","DOIUrl":null,"url":null,"abstract":"Coronavirus Disease-19 (COVID-19) is caused by Severe Acute Respiratory Syndrome-Corona Virus-2 (SARS-CoV-2). In severe cases, the immune response may cause a cytokine storm. Neutrophil Lymphocyte Ratio (NLR) and D-dimer are parameters that may be used to predict the severity of COVID-19. This study aims to determine the diagnostic validity of the combination of NLR and D-dimer on the severity of COVID-19 patients. The study population was hospitalized COVID-19 patients whose diagnosis were confirmed by real time-PCR. This was a retrospective cross-sectional study. The cut-off value was based on the Area Under Curve (AUC) of the Receiver Operator Characteristic Curve (ROC) analysis and the combination of NLR and D-Dimer validity was tested against the severe and non-severe COVID-19 groups by assessing sensitivity, specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV), positive Likelihood Ratio (LR+) and negative Likelihood Ratio (LR-). There were 1,314 subjects. Seven hundred and forty-four were in the severe group, 570 in the non-severe group. The combination of NLR > 4.02 and D-dimer > 1.12 mg/L on the severity of COVID-19 showed a sensitivity value of 70.8%, specificity 98.3%, PPV 98.1%, NPV 72.1%, LR+ 40.38 and LR- 0.30. The combination of NLR >4.02 and D-dimer >1.12 mg/L for the severity of COVID-19 showed high specificity and PPV (98.3% and 98.1%). This was also supported by the LR+ value, which indicates that if NLR > 4.02 and D-dimer > 1.12 mg/L, it may cause severe COVID-19 by 40.38 times compared to NLR ≤4.02, and D-dimer ≤1.12 mg/L. The combination of NLR and D-Dimer can be used to predict the severity of COVID-19.","PeriodicalId":354500,"journal":{"name":"Indonesian Journal of Clinical Pathology and Medical Laboratory","volume":"106 5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"The Combination of NLR and D-dimer as Predictor Instrument for the Severity of COVID-19\",\"authors\":\"Shofia Widya Murti, D. Prihatni, A. Sugianli\",\"doi\":\"10.24293/ijcpml.v28i3.1998\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Coronavirus Disease-19 (COVID-19) is caused by Severe Acute Respiratory Syndrome-Corona Virus-2 (SARS-CoV-2). In severe cases, the immune response may cause a cytokine storm. Neutrophil Lymphocyte Ratio (NLR) and D-dimer are parameters that may be used to predict the severity of COVID-19. This study aims to determine the diagnostic validity of the combination of NLR and D-dimer on the severity of COVID-19 patients. The study population was hospitalized COVID-19 patients whose diagnosis were confirmed by real time-PCR. This was a retrospective cross-sectional study. The cut-off value was based on the Area Under Curve (AUC) of the Receiver Operator Characteristic Curve (ROC) analysis and the combination of NLR and D-Dimer validity was tested against the severe and non-severe COVID-19 groups by assessing sensitivity, specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV), positive Likelihood Ratio (LR+) and negative Likelihood Ratio (LR-). There were 1,314 subjects. Seven hundred and forty-four were in the severe group, 570 in the non-severe group. The combination of NLR > 4.02 and D-dimer > 1.12 mg/L on the severity of COVID-19 showed a sensitivity value of 70.8%, specificity 98.3%, PPV 98.1%, NPV 72.1%, LR+ 40.38 and LR- 0.30. The combination of NLR >4.02 and D-dimer >1.12 mg/L for the severity of COVID-19 showed high specificity and PPV (98.3% and 98.1%). This was also supported by the LR+ value, which indicates that if NLR > 4.02 and D-dimer > 1.12 mg/L, it may cause severe COVID-19 by 40.38 times compared to NLR ≤4.02, and D-dimer ≤1.12 mg/L. The combination of NLR and D-Dimer can be used to predict the severity of COVID-19.\",\"PeriodicalId\":354500,\"journal\":{\"name\":\"Indonesian Journal of Clinical Pathology and Medical Laboratory\",\"volume\":\"106 5 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Indonesian Journal of Clinical Pathology and Medical Laboratory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.24293/ijcpml.v28i3.1998\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indonesian Journal of Clinical Pathology and Medical Laboratory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.24293/ijcpml.v28i3.1998","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Combination of NLR and D-dimer as Predictor Instrument for the Severity of COVID-19
Coronavirus Disease-19 (COVID-19) is caused by Severe Acute Respiratory Syndrome-Corona Virus-2 (SARS-CoV-2). In severe cases, the immune response may cause a cytokine storm. Neutrophil Lymphocyte Ratio (NLR) and D-dimer are parameters that may be used to predict the severity of COVID-19. This study aims to determine the diagnostic validity of the combination of NLR and D-dimer on the severity of COVID-19 patients. The study population was hospitalized COVID-19 patients whose diagnosis were confirmed by real time-PCR. This was a retrospective cross-sectional study. The cut-off value was based on the Area Under Curve (AUC) of the Receiver Operator Characteristic Curve (ROC) analysis and the combination of NLR and D-Dimer validity was tested against the severe and non-severe COVID-19 groups by assessing sensitivity, specificity, Positive Predictive Value (PPV), Negative Predictive Value (NPV), positive Likelihood Ratio (LR+) and negative Likelihood Ratio (LR-). There were 1,314 subjects. Seven hundred and forty-four were in the severe group, 570 in the non-severe group. The combination of NLR > 4.02 and D-dimer > 1.12 mg/L on the severity of COVID-19 showed a sensitivity value of 70.8%, specificity 98.3%, PPV 98.1%, NPV 72.1%, LR+ 40.38 and LR- 0.30. The combination of NLR >4.02 and D-dimer >1.12 mg/L for the severity of COVID-19 showed high specificity and PPV (98.3% and 98.1%). This was also supported by the LR+ value, which indicates that if NLR > 4.02 and D-dimer > 1.12 mg/L, it may cause severe COVID-19 by 40.38 times compared to NLR ≤4.02, and D-dimer ≤1.12 mg/L. The combination of NLR and D-Dimer can be used to predict the severity of COVID-19.