Figure 1.
Flow chart showing patients' outcome according to early (within the first 48 hrs) or late (after the 48th hr) NIV success or failure.
NIV = noninvasive ventilation; ARF = acute respiratory failure; OHS = obesity hypoventilation syndrome; DNI = do-not-intubate.
Table 1.
Patients characteristics at admission.
Figure 2.
Arterial blood gases at the time of noninvasive ventilation (NIV) initiation (H0), after 2 hrs of NIV (H2), and at the time of NIV failure (failure) in patients of the early NIV failure group (n = 13, left column).
By comparison, arterial blood gases evolution during the first 48(n = 30, central column) and in patients with a delayed response to NIV (n = 33, right column).