These numbers have not been validated and how oxygen need changed over time for patients with COVID19, different strains of COVID19, and for other respiratory illnesses is poorly characterized.īelow is a summary table of select data to date. Although cross-sectional oxygen usage data have been published from early in the COVID-19 pandemic, the evolution of respiratory support practices-particularly the timing of intubation and the roles of non-invasive ventilation and high flow nasal oxygen-has limited the degree to which these data could be used to guide present-day estimates of oxygen demand.Įarly WHO estimates postulated that 75% of hospitalized COVID19 patients would be classified as ‘severe’ (10 L/min O2 requirement) and 25% classified as ‘critical’ (30 L/min O2 requirement). Often e stimates of oxygen consumption by patient are derived from expert opinion and limited data. OCC Oxygen Demand Calculator), users can manipulate the size of the ward and the severity of hypoxemia for patients. Potential limitations: unvalidated complex dynamic demand is difficult to capture difficult to use output to help decision-makers forecast supply solutions at different levels of careįor calculators that modeled facility scenarios (e.g.It can also quantify which consumables and equipment will need to be replaced across a specified timeframe, when reordering is needed and the ongoing budget required. ![]() LOX, concentrators, PSA, cylinders or a mix) multiple scenarios of oxygen infrastructure to compare CAPEX/OPEX cost, demand, resource re-allocation procurement lists for facilities covering oxygen source equipment, consumables, and diagnostic devices. Outputs: oxygen demand at health facility recommended oxygen source to meet needs (i.e.Inputs: facility-level data and customizable country input parameters.Format: excel workbook, offline (downloaded as zip via Office 365, 17mb).Purpose: support high-level healthcare budgeting and planning needs related to oxygen.Target audience: health and procurement specialists and oxygen technology stakeholders.A comparison summary table is coming soon. waste, leak, rationing etc).īelow are descriptions of some widely used tools. Flow measurement systems are uncommon in many facilities including LMICs, and also may not account for true need (e.g. number of beds, gas wall outlets, historical consumption), however, such estimates have major limitations and challenges. Oxygen consumption is commonly estimated based on need (e.g. Planners trying to determine which oxygen supply systems are optimal for a given setting.Advocacy or policy teams seeking to improve access to oxygen locally or globally. ![]()
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