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BACKGROUND Background: Northwell Health (Northwell), an integrated health system in New York, treated more than 15,000 inpatients with coronavirus disease 2019 (COVID-19) at the US epicenter of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. OBJECTIVE Objective: We describe the demographic characteristics of COVID-19 mortalities, observation of frequent rapid response teams (RRT)/cardiac arrest (CA) calls for non-intensive care unit (ICU) patients, and factors that contributed to RRT/CA calls. METHODS Methods: A team of registered nurses reviewed medical records of inpatients who tested positive for SARS-CoV-2 via polymerase chain reaction before or on admission and died between March 13 (first Northwell inpatient expiration) and April 30, 2020 at 15 Northwell hospitals. Findings for these patients were abstracted into a database and statistically analyzed. RESULTS Results: Of 2634 COVID-19 mortalities, 56.1% (1478/2634) had oxygen saturation levels greater than or equal to 90% on presentation and required no respiratory support. At least one RRT/CA was called on 42.2% (1112/2634) of patients at a non-ICU level of care. Before the RRT/CA call, the most recent oxygen saturation levels for 76.6% (852/1112) of non-ICU patients were at least 90%. At the time RRT/CA was called, 43.1% (479/1112) had an oxygen saturation less than 80%. CONCLUSIONS Conclusions: This study represents one of the largest cohorts of reviewed mortalities that also captures data in non-structured fields. Approximately 50% of deaths occurred at a non-ICU level of care, despite admission to the appropriate care setting with normal staffing. The data imply a sudden, unexpected deterioration in respiratory status requiring RRT/CA in a large number of non-ICU patients. Patients admitted to a non-ICU level of care suffer rapid clinical deterioration, often with a sudden decrease in oxygen saturation. These patients could benefit from additional monitoring (eg, continuous central oxygenation saturation), although this approach warrants further study. CLINICALTRIAL Funding: National Institute on Aging and the National Library of Medicine of the National Institutes of Health.
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