Which nursing action would be the highest priority when suctioning a patient with an oral endotracheal (ET) tube or tracheostomy?

Choice A rationale Administering antianxiety medication is a comfort measure but does not address the immediate physiological risks associated with suctioning. Suctioning induces transient hypoxia and increases myocardial oxygen demand, which can lead to dysrhythmias. While reducing patient distress is important for overall care, it is not the highest priority when compared to maintaining adequate cellular oxygenation during an invasive procedure that actively removes oxygen from the airway. Choice B rationale Instilling normal saline into the endotracheal tube was once common practice but is now discouraged because it does not effectively thin secretions. Instead, it can displace bacteria from the inner lumen of the tube deeper into the lower respiratory tract, increasing the risk of ventilator-associated pneumonia. It also decreases oxygen saturation significantly. Hydration and humidification are the preferred systemic methods for managing thick pulmonary secretions in intubated patients. Choice C rationale Suctioning removes both secretions and oxygen from the airway, which can lead to severe hypoxemia, bradycardia, or even cardiac arrest. Providing 100 percent FiO2 for at least 30 to 60 seconds prior to the procedure creates an oxygen reserve in the lungs. This prevents the hemoglobin saturation from dropping to dangerous levels during the periods of apnea and negative pressure. This action is the highest priority to ensure patient safety. Choice D rationale Auscultation is a necessary assessment to evaluate the effectiveness of the suctioning procedure and to ensure the airway is clear. However, it is an evaluative step performed after the intervention has occurred. While it helps determine if further suctioning is required, it does not prevent the immediate life-threatening complications of hypoxia that occur during the procedure itself. Therefore, it remains secondary to the proactive step of pre-oxygenation.