Certified Respiratory Therapist Practice Exam

What could cause suctioning to stop suddenly during tracheobronchial aspiration?

1. Change in ventilation mode

2. Clearing of secretions

3. Addition of supplemental oxygen

4. Interaction with mechanical ventilator

The correct answer is: Clearing of secretions

The correct answer is that suctioning may stop suddenly during tracheobronchial aspiration due to the clearing of secretions. When suctioning is performed, the primary goal is to remove excess mucus or secretions from the airway to maintain optimal airway patency and facilitate effective ventilation. If the suctioning process successfully clears the obstructive secretions, this may lead to an immediate cessation of the need for further suctioning. Once the airway is clear, there may no longer be a need to continue suctioning, as the obstruction has been resolved and the patient may be able to breathe more freely. This can also initiate a positive response in the patient, leading to improved oxygenation and ventilation, as well as enhanced comfort. Thus, the clearing of secretions directly impacts the procedure itself, indicating that the suctioning is effective and can be stopped accordingly. In contrast, changes in ventilation mode, the addition of supplemental oxygen, or interactions with a mechanical ventilator may influence the overall respiratory support the patient receives, but these factors do not necessarily correlate with the immediate cessation of suctioning as a direct result of resolving the blockage caused by secretions.