Abstract
Little is known about how COVID-19 treatment patterns have evolved over time in nursing homes (NHs) despite the devastating effects of COVID-19 in this setting. The aim was to describe changes in COVID-19-related medication use over time among NH residents in the United States. Retrospective cohort study. This study used electronic health records (EHR) from 11 different US NH corporations between January 1, 2018, and March 31,2022. The use of medications approved for COVID-19-related conditions or known to be used off-label for COVID-19 during the study period is identified. We described trends in the use of each drug and combined use per 1000 NH residents over calendar time [quarters (Q)]. A total of 59,022 unique residents with the use of an eligible medication were identified. Hydroxychloroquine use sharply increased from 9.8 in 2020Q1 to 30.2 orders per 1000 individuals in 2020Q2. Dexamethasone use increased sharply from 14.8 in 2020Q2 to a peak of 121.9 orders per 1000 individuals in 2020Q4. Azithromycin use increased from 44.1 in 2019Q3 to a peak of 99.9 orders per 1000 individuals in 2020Q4, with a drop in 2020Q3 of 51.3 per 1000 individuals in 2020Q3. Concurrent use of azithromycin and hydroxychloroquine increased sharply from 0.3 in 2020Q1 to 10.6 orders per 1000 residents in 2020Q2 and then drastically decreased to 0.6 per 1000 residents in 2020Q3. Concurrent use of dexamethasone and azithromycin rose considerably from 0.7 in 2020Q2 to 28.2 orders per 1000 residents in 2020Q4. As in other settings, COVID-19-related medication use in NHs appears to have changed in response to the shifting evidence base and availability of medications during the pandemic. Providers should continue to diligently modify their prescribing as new evidence accrues.
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