It is known that different pathogens, including Pseudomonas aeruginosa, enter the respiratory tract via the nasal cavities and colonize the upper respiratory tract. At this level, pathogens can create resistant colonies protected by a particular layer of bacterial biofilm which makes it difficult to remove them from the upper airways. It is easier to germs to stabilize and to proliferate in such a kind of environment.
The colonization of the upper airways by pathogens can facilitate the following colonization of the lower airways. If infectious agents have the opportunity to colonize the lower respiratory tract, patients will face an increased risk of chronic disease and a loss of pulmonary function.
Daily nasal washing can help the removal of germs from the nasal cavities, preventing colonization of the upper and lower airways and the related consequences for lung health.