* This practice is associated with worsened post-extubation atelectasis and end-expiratory lung volumes (EELV) according to a 2026 BJA paper from a team at BIDMC who used EIT to measure atelectasis and lung volumes. Conversely, using an FiO2 of 40% or 70% was shown to decrease atelectasis and increase EELV. | * This practice is associated with worsened post-extubation atelectasis and end-expiratory lung volumes (EELV) according to a 2026 BJA paper from a team at BIDMC who used EIT to measure atelectasis and lung volumes. Conversely, using an FiO2 of 40% or 70% was shown to decrease atelectasis and increase EELV. |