Abstract
Objective:-To compare the diagnostic accuracies of HRCTchest and RT-PCR results in diagnosis of coronavirus disease (COVID-19) in a tertiary care hospital in Kolar. Methodology This was a prospective study approved by Ethical Review Committee of R L JALAPPA Hospital. From Dec 2021 to May 2022, a total of 48 CT chest were performed in this hospital. Patients aged above 18 years, irrespective of gender, who were clinically suspected of COVID-19 with at least one RT-PCR test and HRCT chest done, individuals with close contact history and admitted patients were included. Patients with interval of more than seven days between HRCT chest acquisition and rst PCR sampling, patients with pulmonary and extra pulmonary lung malignancy, chest trauma, previous chest surgery were excluded. For those patients with negative rst PCR but suspicious clinical symptoms suggesting COVID-19, a second PCR was conducted within 3 days after the rst, the result of which was taken as diagnostic gold standard. For patients with only a single RT-PCR test, the test result was taken as the diagnostic gold standard Results:- Sensitivity of HRCTin diagnosing Covid 19 was 86.49%, Specicity of HRCT in diagnosing Covid 19 was 27.27%, Positive Predictive Value of HRCT in diagnosing Covid 19 was 80.00%, Negative Predictive Value of HRCT in diagnosing Covid 19 was 37.50% and Accuracy of HRCT in diagnosing Covid 19 was 72.92%
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