High-flow oxygen through nasal cannula in acute hypoxemic respiratory failure.
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Frat Jean-Pierre, Thille Arnaud W, Mercat Alain, Girault Christophe, Ragot Stéphanie, Perbet Sébastien, Prat Gwénael, Boulain Thierry, Morawiec Elise, Cottereau Alice, Devaquet Jérôme, Nseir Saad, Razazi Keyvan, Mira Jean-Paul, Argaud Laurent, Chakarian Jean-Charles, Ricard Jean-Damien, Wittebole Xavier, Chevalier Stéphanie, Herbland Alexandre, Fartoukh Muriel, Constantin Jean-Michel, Tonnelier Jean-Marie, Pierrot Marc, Mathonnet Armelle, Béduneau Gaëtan, Delétage-Métreau Céline, Richard Jean-Christophe M, Brochard Laurent, Robert René, FLORALI Study Group, REVA Network
Аннотация
METHODS: We performed a multicenter, open-label trial in which we randomly assigned patients without hypercapnia who had acute hypoxemic respiratory failure and a ratio of the partial pressure of arterial oxygen to the fraction of inspired oxygen of 300 mm Hg or less to high-flow oxygen therapy, standard oxygen therapy delivered through a face mask, or noninvasive positive-pressure ventilation. The primary outcome was the proportion of patients intubated at day 28; secondary outcomes included all-cause mortality in the intensive care unit and at 90 days and the number of ventilator-free days at day 28.
RESULTS: A total of 310 patients were included in the analyses. The intubation rate (primary outcome) was 38% (40 of 106 patients) in the high-flow-oxygen group, 47% (44 of 94) in the standard group, and 50% (55 of 110) in the noninvasive-ventilation group (P=0.18 for all comparisons). The number of ventilator-free days at day 28 was significantly higher in the high-flow-oxygen group (24±8 days, vs. 22±10 in the standard-oxygen group and 19±12 in the noninvasive-ventilation group; P=0.02 for all comparisons). The hazard ratio for death at 90 days was 2.01 (95% confidence interval [CI], 1.01 to 3.99) with standard oxygen versus high-flow oxygen (P=0.046) and 2.50 (95% CI, 1.31 to 4.78) with noninvasive ventilation versus high-flow oxygen (P=0.006).
CONCLUSIONS: In patients with nonhypercapnic acute hypoxemic respiratory failure, treatment with high-flow oxygen, standard oxygen, or noninvasive ventilation did not result in significantly different intubation rates. There was a significant difference in favor of high-flow oxygen in 90-day mortality. (Funded by the Programme Hospitalier de Recherche Clinique Interrégional 2010 of the French Ministry of Health; FLORALI ClinicalTrials.gov number, NCT01320384.).