Correlation between Chest CT Severity Score and the Oxygen saturation of Patients with COVID-19 Pneumonia
Keywords:
COVID-19, CT-Scan Scoring, Severity of ChestAbstract
In COVID-19 Pneumonia both capillary oxygen saturation and chest Computed tomography scan are important tools to assess severity of the disease. Here, we investigated the relation between computed tomography severity score and capillary oxygen saturation in patients with the infection. Objective: This study is assigned to assess the correlation between computed tomography lung findings and capillary oxygen saturation using pulse oximeter among patients with Coronavirus Disease – 19. Patients and Method: A cross-sectional study consisted of 120 adult patients (72 male, 48 female) with Coronavirus Disease-19 who were initially seen in the Rozhawa Emergency Hospital, Lalav Hospital for Respiratory Care Unit and Outpatient clinic in Erbil city from August 1st 2020 to July 31sd 2021. All patients underwent pulmonary CT-scan, and measurements of capillary oxygen saturation using pulse oximetry at the time of admission or first medical contact. Results: The total number of patients was 120. Their mean age (SD) was 54.7 (14.2) years, the median was 56 years, and the age range was 23 – 83 years. More than half of the patients were aged ? 50 years, and 60% were males. The majority (86.7%) were non-smokers, and only 11.7% had history of chronic lung disease. It is evident that there was a strong inverse significant correlation between the SpO2 and the degree of lung involvement. The more the % of lung involvement, the less the SpO2 levels(p < 0.001).It is evident that 20.2% of the non-smokers had extensive lung involvement (> 75%) while none of the ever smokers had extensive lung involvement; in addition to that, 31.3% of the ever-smokers had limited lung involvement (< 5%) compared with 1.9% among the non-smokers (p < 0.001). The degree of lung involvement was 51-75% among 71.4%, and >75% among 14.3% of the patients with history of chronic lung disease, compared with 26.4% and 17.9% respectively among those with no such a history (p = 0.017). Conclusion: The present study showed that patients with hypoxia had significantly higher computed tomography severity score and lung involvement.
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