Respiratory muscle evaluation
cough, CM, ®
BLIND
The blind assessors (CM and YC) monitored daily changes in end-tidal thickness of the right hemidiaphragm from the day of inclusion until extubation using a high frequency (13 MHz) linear transducer over the apposition zone to monitor diaphragm thickness. Maximum inspiratory pressure (MIP) and cough peak expiratory flow (PEF) were also measured at the beginning of the SBT. The MIP was measured using an electronic manometer with a micro-RPM® unidirectional valve. Participants were informed that MIP would be evaluated at the residual volume and were instructed accordingly. The participant was disconnected from the ventilator for a minimum of 20 s [