Fig. 4

Measured acceleration difference between inspiration and expiration in the “completed” group and the “abandoned” group in the first 2 min without tube connection, from minute 2 to minute 4 orally connected to a endotracheal tube of 5 mm internal diameter, from minute 4 to minute 6 connected to a 4 mm tube, from minute 6 to minute 8 connected to a 3 mm tube and from minute 8 to minute 10 connected to a 2 mm tube. a displays acceleration sensor measurements in abdominal wall position of the “completed” group. b displays acceleration sensor measurements in abdominal wall position of the “abandoned” group. c displays acceleration sensor measurements in thoracic wall position of the “completed” group. d displays acceleration sensor measurements in thoracic wall position of the “abandoned” group. Data are displayed as means of artificial units ± CI