Stratifying the early radiologic trajectory in dyspneic patients with COVID-19 pneumonia

This study aimed to stratify the early pneumonia trajectory on chest radiographs and compare patient characteristics in dyspneic patients with coronavirus disease 2019 (COVID-19). Materials and methodsWe retrospectively included 139 COVID-19 patients with dyspnea (87 men, 62.7 ±16.3 years) and serial chest radiographs from January to September 2020. Radiographic pneumonia extent was quantified as a percentage using a previously-developed deep learning algorithm. A group-based trajectory model was used to categorize the pneumonia trajectory after symptom onset during hosp italization. Clinical findings, and outcomes were compared, and Cox regression was performed for survival analysis. ResultsRadiographic pneumonia trajectories were categorized into four groups. Group 1 (n = 83, 59.7%) had negligible pneumonia, and group 2 (n = 29, 20.9%) had mild pneumonia. Group 3 (n = 13, 9.4%) and group 4 (n = 14, 10.1%) showed similar considerable pneumonia extents at baseline, but group 3 had decreasing pneumonia extent at 1 –2 weeks, while group 4 had increasing pneumonia extent. Intensive care unit admission and mortality were significantly more frequent in groups 3 and 4 than in groups 1 and 2 (P

Source: PLoS One - October 22, 2021 Category: Biomedical Science Authors: Jin Young Kim Source Type: research