Airway pressures change during fiberoptic bronchoscopy and endotracheal suctioning. In this study pressure changes are examined in a mechanical lung model and in a population of ICU patients on mechanical ventilation.

Airway pressures change during fiberoptic bronchoscopy and endotracheal suctioning. In this study such pressure changes are examined in a mechanical lung model and in a population of ICU patients on mechanical ventilation. A systematic recording of airway pressures, tidal volumes and blood gases are carried out during ordinary therapeutic procedures requested by the staff physician. No additional study interventions are carried out.

The aim of the project is to examine negative effects of pressure/volume changes.

Inclusion Criteria:

• > 18 years of age
• on mechanical ventilation
• daily endotracheal suctioning performed

Exclusion Criteria:

• < 18 years of age
• non-invasive ventilation

Patients in the Intensive Care Unit (ICU) on mechanical ventilation where daily endotracheal suctioning is performed to remove secretions.

Most of the patients have ARDS/ ALI.