Study intervention
DECUBITUS, COMPLICATIONS
As soon as possible after randomisation, patients assigned to the intervention group had to lie in a prone position for a minimum of two sessions with the goal of a cumulative time of at least 150 min in the prone position during the daytime. Patients were encouraged to lie in the prone position as much as possible. Time and duration of each mobilisation were recorded in a notebook by the patient or a staff member, except at night because of the extra workload of caregivers during the pandemic. Between sessions of prone position, patients could lie supine or be in the semi-sitting position in bed or in a chair. Intolerance and complications of prone position were recorded in the notebook.Patients assigned to usual care alone had to stay in the semi-sitting position in bed (minimum 30° inclination, not more than 60°–70° inclination) or in a chair during the daytime. The prone position was not allowed during the daytime. It was allowed at night if it was the patient’s natural position of sleeping. The lateral decubitus positioning was allowed. Position during the daytime was recorded by the patient or a staff member, except at night because of the extra workload of caregivers during the pandemic.