Sequential use of noninvasive ventilation and high flow nasal therapy after early extubation in chest trauma patients recovering from acute hypoxaemic respiratory failure G. Accurso; A.N. Cracchiolo; D.M. Palma; G. Misseri; M. Ippolito; V. Alvino; S.M. Raineri; A. Giarratano; A. Cortegiani; C. Gregoretti;