From: Thoracic paravertebral block for perioperative lung preservation during VATS pulmonary surgery: study protocol of a randomized clinical trial
FiO2
PEEP
Step1
0.6
5
Step2
0.7
Step…
…
Step5
1.0
Step6
RM+6
Step7
RM+7
RM+…
Step10
RM+10