Journal
EUROPEAN RESPIRATORY JOURNAL
Volume 50, Issue 1, Pages -Publisher
EUROPEAN RESPIRATORY SOC JOURNALS LTD
DOI: 10.1183/13993003.02552-2016
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Funding
- Programme Hospitalier de Recherche Clinique National from French Ministry of Health for the French centres
- Ministry of Finance in Quebec for Canadian centres
- Brest University Hospital
- Crossref Funder Registry
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Oxygen is commonly administered in hospitals, with poor adherence to treatment recommendations. We conducted a multicentre randomised controlled study in patients admitted to the emergency department requiring O-2 >= 3 L.min(-1). Patients were randomised to automated closed-loop or manual O-2 titration during 3 h. Patients were stratified according to arterial carbon dioxide tension (PaCO2) (hypoxaemic PaCO2 <= 45 mmHg; or hypercapnic PaCO2>45-<= 55 mmHg) and study centre. Arterial oxygen saturation measured by pulse oximetry (SpO(2)) goals were 92-96% for hypoxaemic, or 88-92% for hypercapnic patients. Primary outcome was % time within SpO(2) target. Secondary endpoints were hypoxaemia and hyperoxia prevalence, O-2 weaning, O-2 duration and hospital length of stay. 187 patients were randomised (93 automated, 94 manual) and baseline characteristics were similar between the groups. Time within the SpO(2) target was higher under automated titration (81 +/- 21% versus 51 +/- 30%, p<0.001). Time with hypoxaemia (3 +/- 9% versus 5 +/- 12%, p=0.04) and hyperoxia under O-2 (4 +/- 9% versus 22 +/- 30%, p<0.001) were lower with automated titration. O-2 could be weaned at the end of the study in 14.1% versus 4.3% patients in the automated and manual titration group, respectively (p<0.001). O-2 duration during the hospital stay was significantly reduced (5.6 +/- 5.4 versus 7.1 +/- 6.3 days, p=0.002). Automated O-2 titration in the emergency department improved oxygenation parameters and adherence to guidelines, with potential clinical benefits.
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