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• W3136486392 abstract "Abstract We applied a queuing model to inform ventilator capacity planning during the first wave of the COVID-19 epidemic in the province of British Columbia (BC), Canada. The core of our framework is a multiclass Erlang loss model that represents ventilator use by both COVID-19 and non-COVID-19 patients. Input for the model includes COVID-19 case projections, and our analysis incorporates projections with different levels of transmission due to public health measures and social distancing. We incorporated data from the BC Intensive Care Unit Database to calibrate and validate the model. Using discrete event simulation, we projected ventilator access, including when capacity would be reached and how many patients would be unable to access a ventilator. Simulation results were compared with three numerical approximation methods, namely pointwise stationary approximation, modified offered load, and fixed point approximation. Using this comparison, we developed a hybrid optimization approach to efficiently identify required ventilator capacity to meet access targets. Model projections demonstrate that public health measures and social distancing potentially averted up to 50 deaths per day in BC, by ensuring that ventilator capacity was not reached during the first wave of COVID-19. Without these measures, an additional 173 ventilators would have been required to ensure that at least 95% of patients can access a ventilator immediately. Our model provides a tool for policy makers to quantify the interplay between public health measures, necessary critical care resources, and performance indicators for patient access." @default.
• W3136486392 created "2021-03-29" @default.
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• W3136486392 date "2021-03-21" @default.
• W3136486392 modified "2023-10-01" @default.
• W3136486392 title "A Queuing Model for Ventilator Capacity Management during the COVID-19 Pandemic" @default.
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• W3136486392 doi "https://doi.org/10.1101/2021.03.17.21253488" @default.
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