Intra hospital transport of ICU patients is still at high risk of respiratory complications.We propose to determine if endotracheal tube clamping prior to disconnect ventilator allows to avoid oxygenation decrease.

Changing respiratory support and multiples endotracheal tube disconnections may induce a loss of PEEP and finally lead to alveolar derecruitment. This study is an evaluation of a care procedure to limit the incidence of alveolar derecruitment in ventilated intubated ICU patients during transport for CT scan.

Intra hospital transport of ICU patients are performed by anesthesiologist nurses, the physician entrusts them this activity.

This is a randomized controlled study, the procedure is to clamp endotracheal tube before each disconnection from ventilator.

Inclusion Criteria:

• intensive care patient
• intubated, sedated, controlled assisted ventilation
• Intra hospital transport for CT scan
• arterial catheter
• the patient or his trusted person consent to the study

Exclusion Criteria:

• Patient Covid tests positive or Covid test results not received
• extubated, unsedated,
• reinforced tube
• tracheotomy
• pregnancy
• guardianship

12 months after the main publication

Data are provided to qualified investigators free of charge. Required documents to request data include a summary of the research plan, request form, and IRB review. Dataset will be shared after careful examination by the study board of investigators.