Final answer:
Suctioning is necessary for a person with a tracheostomy to remove secretions, maintain a clear airway, reduce infection risk, and ensure proper ventilation and gas exchange.
Step-by-step explanation:
The primary reason that suctioning is included in the client's plan of care for a person with a tracheostomy tube attached with tracheostomy collar for the delivery of humidified oxygen is to remove secretions from the airway. This helps to maintain a clear airway, reducing the risk of infection, and facilitating optimal ventilation. Secretions can accumulate in the tube and in the respiratory tract, and if they are not removed, they can obstruct the airway and interfere with gas exchange, leading to complications such as pneumonia or hypoxemia. The process of suctioning should be done with care to minimize the risk of causing trauma to the airway and to avoid the development of a ventilation/perfusion (V/Q) mismatch in the lungs.