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Rox index in patients with HFNC success and failure.
Rox index values at different time points in patients who did not require IMV (success of HFNC; black dots) versus those who required IMV (failure of HFNC; grey dots) among patients with hypoxemic respiratory failure who underwent treatment with HFNC.
HFNC, high-flow nasal cannula; IMV, invasive mechanical ventilation.
