Background: The role of home oxygen therapy for patients recovering from Coronavirus Disease 2019 (COVID-19) pneumonia, characterized by impaired gas exchange, is not well-defined.
Objectives: To compare the characteristics, duration, odds of receiving, and continuing to receive home oxygen prescriptions between patients discharged home after COVID-19 pneumonia hospitalization and those discharged after non-COVID-19 pneumonia.
Methods: From April 2020 to March 2021, 52,951 patients with COVID-19 pneumonia (53.6 % women, 64 % White) were identified, and from January 2019 to December 2019, 26,701 patients with non-COVID pneumonia (53.9 % women, 76.7 % White) were identified, using the Optum Clinformatics Data Mart Database. New oxygen prescriptions were identified through Healthcare Common Procedure Coding Systems codes. Propensity score matching adjusted for confounders, and Cox regression analysis was conducted to compare post-discharge oxygen use.
Results: Following hospitalization, oxygen was prescribed to 52,951 patients with COVID-19 pneumonia and 26,701 patients with non-COVID pneumonia in the United States. The COVID-19 pneumonia group were four times more likely to be prescribed supplemental oxygen compared to the non-COVID-19 pneumonia group (OR 4.22; 95 % confidence interval [CI] 3.76-4.74). This trend persisted in sensitivity analyses: ICU patients (OR 4.05; 95 % CI 3.36-4.88) and those who received both ICU admission and mechanical ventilation (OR 3.84; 95 % CI 2.32-6.37). Hispanic patients had the highest likelihood of receiving a supplemental oxygen prescription after discharge (OR 6.75; 95 % CI 5.03-9.05).
Conclusions: Post-hospitalization, one in five patients with COVID-19 received prescriptions for supplemental oxygen, which was significantly higher than the proportion of patients with non-COVID-19 pneumonia.
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