Figure 5

Sonomicrometric measurements in the sternal region (A) and in the mid-costal region (B) of the right hemidiaphragm in each group. Occlusion: measurement performed during prolonged tracheal occlusion; R PNS: measurement performed during a right supramaximal stimulation of the right phrenic nerve; B PNS: measurement performed during a bilateral supramaximal stimulation of the phrenic nerve; % shortening, percentage of shortening in relation to the resting length of the muscular fiber measured at the end of the expiration.