Correlation Between Computed Tomography Severity Score and Patient Prognosis In Cases of Covid-19 Pneumonia: A Retrospective Study

Objective: To Find the association between CT severity score and patient prognosis in cases of COVID-19 pneumonia in a tertiary care hospital in Lahore. Method: It was a retrospective descriptive observational study, carried out at Chaudhary Muhammad Akram Teaching and Research Hospital, Lahore. We enrolled 80 patients clinically suspected of having COVID-19 pneumonia and showing characteristic HRCT features of the same in our study using consecutive sampling technique. Patient prognosis was classified into patients recovered and patients expired. A CT severity score (CTSS) consisting of 25 points wasdeployed to categorize disease as mild, moderate and severe. Statistical package for social sciences (SPSS) version 20 was utilized for statistical analysis.Association between patient prognosis and CT severity scoreof COVID -19 infection was studied by applying the Pearson correlation. Results: 19 (100%) out of 19 patients with mild CTSS recovered, 32 (80%) out of 40 patients with moderate CTSS recovered while 8 (20%) expired and 11 (52.4%) out of 21 patients with severe CTSS recovered while 10 (47.6%) expired.A statistically significant positive association (p = 0.001) was observed between patient prognosis and CT severity score in COVID-19 patients. Conclusion: A positive association exists between CT severity score and patient prognosis in cases of Covid-19 pneumonia