Patel, Dr. DhananjayKachewar, Dr. Sushil2023-07-142023-07-142022-09Patel Dr. Dhananjay, Kachewar Dr. Sushil. Correlation between D-dimer and HRCT in Covid-19. VIMS Health Science Journal. 2022 Sept; 9(3): 69-722348-523X2454-1991http://imsear.searo.who.int/handle/123456789/219084Background: To retrospectively determine the correlation between CTseverity score & D-dimer. Methodology: This is retrospective original research of 227 patients (IPD & OPD) during April 1 to May 31, 2021 for Covid-19. Patients CTseverity scores, HRCTThorax findings, D-dimer, Platelet count and Demographic variables were recorded. The correlation between CTseverity score & D-dimer were determined. Results:Between the mentioned dates, 227 patients are taken into study which includes 146 Males & 81 Females. Mean of CTseverity score was 6.7, D-dimer was 0.46mg/l. Higher CTscore is seen in males (mean -7.1) as compare to females (mean -6.12). D-dimer are seen higher in males (mean =0.52mg/l) as compare to females (median=0.37mg/l). The study of 227 patients has shown positive correlation between CTscore & D-dimer (r=0.38, p<0.05). Males showed relatively stronger positive correlation (r=0.4, p<0 .05) than females (r=0.3, p<0.05). Patients with age less than equal to 45 has shown relatively stronger positive correlation between CTscore & D-dimer (r=0.4, p<0.05) than patients with age more than 45 (r=0.35, p<0.05). Conclusion:Pulmonary lesion induced by SARS-CoV-2 infection was associated with raised inflammatory response, impairment in exchange of gases, and end organ damage. In study, we can conclude that lung lesion may exert important role in COVID-19 pathogenesis & clinical presentationCovid-19CT severity scoreD-dimerHRCT ThoraxJournal ArticleIndiaJunior ResidentProfessor & Head, Department of Radio-diagnosis, DVVPF's Medical College and Hospital Ahmednagar-414111, Maharashtra, India