ABSTRACT
@#COVID-19 is a highly contagious viral illness with a wide spectrum of clinical manifestations ranging from asymptomatic or mild cold like symptoms to a devastating and often fatal respiratory illness. The elderly and those with underlying morbidity are the groups most often, but certainly not exclusively, associated with death from respiratory pathology. COVID-19 respiratory illness usually manifests clinically as pneumonia with predominant imaging findings of an atypical or organized pneumonia. Chest radiography (CXR) helps to assess the progress of the disease. The BRIXIA score based on radiological appearance may be used to determine the severity and clinical outcome of a patient with COVID-19. The aim of this study was to assess the relationship between the BRIXIA score and the clinical outcome of positive COVID-19 patients at Port Moresby General Hospital (PMGH) in Papua New Guinea (PNG). In this descriptive retrospective study conducted at the Radiology Department of the PMGH the records of 129 Polymerise Chain Reaction (PCR) confirmed patients admitted to PMGH between September and December 2021 were examined. The patients were grouped into mild, moderate or severe categories depending on clinical features at the time of diagnosis. There were 89 (69%) males and 40 (31%) females. The mean (SD) age was 52 (12) years, and the median (IQR) was 53 (44-60). Their admission CXRs were given a Brixia score. Mean (SD) Brixia scores for mild (n=24), moderate (n=67) and severe (n=38) were 4.5 (2.5), 8.9 (2.7) and 12.5 (3.5) respectively. The Brixia score was significantly related to the clinical severity, F 55.49, p <0.001. Twenty seven (77%) of the 35 patients who died had comorbidities of whom 21 (78%) were in the clinically severe group. A Brixia score of 9 or more was closely associated with death, p = 0.001, Odds Ratio with 95% Confidence interval (0R) of 3.9 (1.7-9.6). The Brixia CXR severity score is a useful tool in assessing clinical severity and prognosis in patients with COVID 19.