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The Relationship Between Ct Severity Score and Capillary Blood Oxygen Saturation in Patients With Covid-19 Infection Publisher



Aalinezhad M1 ; Alikhani F1 ; Akbari P1 ; Rezaei MH2 ; Soleimani S1 ; Hakamifard A3
Authors
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Authors Affiliations
  1. 1. Deparment of Radiology, Isfahan University of Medical Sciences, Isfahan, Isfahan, Iran
  2. 2. Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Iran
  3. 3. Department of Infectious Diseases, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Isfahan, Iran

Source: Indian Journal of Critical Care Medicine Published:2021


Abstract

Background: COVID-19 pneumonia is responsible for the latest pandemics. Usage of pulmonary computed tomography (CT) scan is known to be an important method in the diagnosis of COVID-19. Here, we aimed to evaluate the relationship between CT severity score and capillary blood oxygen saturation in patients with COVID-19 infection. Patients and methods: This is a cross-sectional study performed in 2020 on patients with COVID-19 infection. All patients underwent pulmonary CT scan and CT severity score was calculated. The initial capillary oxygen saturation by the time of admission was also collected. Data were collected and analyzed. Results: A total number of 270 patients diagnosed with COVID-19 infection entered the study. The initial mean capillary oxygen saturation was 89.65 ± 8.09%. The mean score in patients was 15.16 ± 8.08. We also indicated that 27 patients had hypoxia by the time of admission and these patients had significantly higher CT severity scores (p = 0.001). Diabetes mellitus (p = 0.001), hypertension (p = 0.001), and chronic obstructive pulmonary disease (COPD) (p = 0.03) and totally, having an underlying disease (p < 0.001) were significantly associated with decreased capillary oxygen saturation. Patients with hypertension (p = 0.001) and patients with the previous medical disease (p = 0.01) had significantly higher CT severity scores than others. There was a significant reverse relationship between CT severity score and capillary oxygen saturation (r = -0.44, p < 0.001). Conclusions: We showed that there was a significant reverse relationship between CT severity score and capillary oxygen saturation which has great clinical importance. Furthermore, we indicated that previous medical history could also play an important role in CT severity score. © Jaypee Brothers Medical Publishers.
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