Recruitment Maneuver in Prevention of Hypoxia During Percutaneous Dilational Tracheostomy: Randomized Trial

Percentage variations of P_aO2 at the different times of the study among the 2 groups of subjects. Since we were interested in changes in oxygenation during the procedure, P_aO2 values at the different times were normalized to the 1 hour before recruitment maneuver (RM) values. * P < .01 between groups (RM vs no RM). † P < .01 with respect to 1 hour before RM in the RM group. PDT = percutaneous dilational tracheostomy.