![]() ![]() All patients from through who were diagnosed with ARDS and required IMV during their hospitalization were included. To identify a historical comparator group of patients with ARDS prior to the COVID-19 pandemic we used a search tool embedded in the EMR (Slicer Dicer, Epic Systems, Verona, WI). The institutional Infection Prevention and Control policy during this period for COVID-19 testing followed CDC and DOH guidelines directing the frequency and timing of COVID-19 testing for defined inpatient populations, based on the pre-test probability of COVID-19. If a patient had a positive SARS-CoV2 RT-PCR test result during their hospital stay, they were included in the COVID-19 positive cohort. Inclusion in the study was further limited to patients admitted to our hospitals who required IMV. COVID-19 testing was performed in all patients who presented to the ED in this time period, regardless of symptomatology and radiographic findings. ![]() Patients with positive real-time reverse-transcriptase-polymerase-chain-reaction (RT-PCR) assays were deemed COVID-19 positive, those with negative results were deemed COVID-19 negative. Test assay techniques are detailed in Supplemental Materials. The NYULH electronic medical record (EMR) (Epic Systems, Verona, WI) was searched for patients over age 18 years seen in our Emergency Department (ED) between and with chest imaging within 24 hours of nasopharyngeal or oropharyngeal swab testing for SARS-CoV-2 virus. ![]()
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