Evaluation of demographic criteria in patients with coronavirus disease 2019 (COVID-19) and the relationship between the computerized tomography scan (CT scan) and mortality from the disease

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the most dangerous virus of the coronavirus family. This study aimed to evaluate demographic criteria in patients with coronavirus disease 2019 (COVID-19) and the relationship between the Computerized Tomography scan (CT scan) and mortality. Methods: In this retrospective study, files of 212 patients with suspected COVID-19, admitted to the teaching hospitals of Shiraz University of Medical Sciences from February 20, 2009, to August 2020, were reviewed; also, CT images of patients were examined, and the frequency of abnormalities was determined. Results: The RT-PCR test was positive in 204 patients (99%). Consolidation was observed in all 206 patients. The highest lung involvement was observed in 69 patients (33.5%) with 90% lung involvement. Atoll sign was diagnosed in 121 cases (58.7%). Crazy-paving reticular lines, subpleural sparing, and bronchial distortion were observed in 129 (62.6%), 88 (42.7%), and 124 patients (60.2%), respectively. In addition, we found multi-segment in the CT scan results of 94.2% (194 cases), which was higher than the single segment seen in 5.8% (12 patients). Conclusion: CT scan is a relatively sensitive technique for diagnosing COVID-19, the relationship between CT scan and death was significant, and the disease severity was more accurate with this method.