Which statement best describes the purpose of suctioning in an endotracheal tube?

• A. To deliver antibiotics
• B. To remove secretions and maintain airway patency
• C. To measure airway pressure
• D. To secure the endotracheal tube

Answer: (B)

Removing secretions to keep the airway open is why suctioning an endotracheal tube is done. In an intubated patient, secretions can collect in the trachea and above the tube, causing partial or complete obstruction, impairing oxygenation, and increasing the risk of infection. Suctioning uses a catheter connected to suction to gently remove those secretions, helping maintain patency of the tube and support adequate ventilation.

This procedure isn’t used to deliver medications, measure airway pressure, or secure the tube. Delivering antibiotics isn’t accomplished through suctioning, since antimicrobial therapy is given systemically or via a nebulizer as prescribed. Measuring airway pressure is done with monitoring equipment or a manometer, not by suctioning. Securing the endotracheal tube is achieved with securement devices or ties, not with suctioning.