Background: COVID-19 is caused by a novel virus that can cause lung abnormalities which can be measured with new chest x-ray scoring system named Brixia score. In COVID-19 patients, coagulation disorders are often found that can be seen through D-Dimer levels. This study aimed to prove the Brixia Score as a predictor of D-Dimer levels. Subjects and Method: This study was an observational analytic study with a cross-sectional approach. The subjects were 94 COVID-19 patients which taken from ICU Melati 1 Dr. Moewardi General Hospital, Surakarta from March 2021 to August 2021 who met the exclusion and inclusion criteria. The independent variable is Brixia score performed by radiologists and dependent variable is D-Dimer levels taken from laboratory results. Sampling was obtained by purposive sampling and the data were investigated using the receiver operating characteristic (ROC) curve. Results: 94 samples were obtained for analysis. The average Brixia Score of patients with D-Dimer <2 µg/mL was Mean= 15.85; SD= 1.43 and D-Dimer ≥2 µg/mL was Mean= 17.29; SD= 0.96. There was a significant difference between the Brixia Score of patients with D-Dimer <2 µg/mL and D-Dimer ≥2 µg/mL (p<0.001). Analysis with the ROC curve shows an area under the curve (AUC) of 0.793. The optimal cutoff value of the Brixia Score for predicting D-Dimer levels was 16.5 (sensitivity 77.9%, specificity 73.1%). Conclusion: Brixia Score proved to be a predictor of D-Dimer levels of COVID-19 patients in ICU care.
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