Variation of arterial oxygen tension/fractional inspired oxygen (PaO
) ratio. (a) From the end of the apnea test before reconnection (T2) to 2 hours after reconnection (T3). (b) From before the apnea test (T1) to 2 hours after reconnection (T3). Values are medians with 25th and 75th percentiles (boxes) and 95th and 5th percentiles (whiskers). RM, recruitment maneuver.