4.6 Article

Hospital bed occupancy rate is an independent risk factor for COVID-19 inpatient mortality: a pandemic epicentre cohort study

Journal

BMJ OPEN
Volume 12, Issue 2, Pages -

Publisher

BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2021-058171

Keywords

COVID-19; public health; epidemiology

Funding

  1. National Institutes of Health [T32HL144456]
  2. National Center for Advancing Translational Science (NCATS) Clinical and Translational Science Award at Einstein-Montefiore [UL1TR001073]
  3. National Institutes of Health/National Heart, Lung, and Blood Institute [K23HL145140]
  4. McAdam Family Foundation

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This retrospective study analyzed the clinical characteristics, treatments, and outcomes of COVID-19 patients admitted to a hospital in New York City from March 1, 2020 to February 28, 2021. The results showed a decrease in inpatient mortality over the course of the pandemic, with an increase in the use of remdesivir, steroids, and anticoagulants, and a decrease in the use of hydroxychloroquine and other antibiotics. Multivariate analysis revealed that bed occupancy was associated with increased 30-day in-hospital mortality of COVID-19 patients.
Introduction COVID-19 first struck New York City in the spring of 2020, resulting in an unprecedented strain on our healthcare system and triggering multiple changes in public health policy governing hospital operations as well as therapeutic approaches to COVID-19. We examined inpatient mortality at our centre throughout the course of the pandemic. Methods This is a retrospective chart review of clinical characteristics, treatments and outcome data of all patients admitted with COVID-19 from 1 March 2020 to 28 February 2021. Patients were grouped into 3-month quartiles. Hospital strain was assessed as per cent of occupied beds based on a normal bed capacity of 1491. Results Inpatient mortality decreased from 25.0% in spring to 10.8% over the course of the year. During this time, use of remdesivir, steroids and anticoagulants increased; use of hydroxychloroquine and other antibiotics decreased. Daily bed occupancy ranged from 62% to 118%. In a multivariate model with all year's data controlling for demographics, comorbidities and acuity of illness, percentage of bed occupancy was associated with increased 30-day in-hospital mortality of patients with COVID-19 (0.7% mortality increase for each 1% increase in bed occupancy; HR 1.007, CI 1.001 to 1.013, p=0.004) Conclusion Inpatient mortality from COVID-19 was associated with bed occupancy. Early reduction in epicentre hospital bed occupancy to accommodate acutely ill and resource-intensive patients should be a critical component in the strategic planning for future pandemics.

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