Which statement best describes the objective of preoxygenation before airway procedures?

Which statement best describes the objective of preoxygenation before airway procedures?

• A. To maximize oxygen reserves and delay hypoxia during airway procedures.
• B. To sedate the patient.
• C. To prevent infection.
• D. To increase airway secretions.

Answer: (B)

Preoxygenation aims to maximize the body's oxygen reserves so you can tolerate a brief pause in ventilation during airway manipulation. After you preoxygenate, the lungs are filled with a high concentration of oxygen, replacing nitrogen. This creates a larger reservoir of oxygen that can be used if the next step requires a moment of apnea while you secure the airway. The result is a delay in the onset of hypoxia and a safer window to complete the procedure. Sedating the patient is a separate consideration and not the purpose of preoxygenation. Likewise, preventing infection and increasing airway secretions are not goals of this step; infection control relates to sterile technique, and increasing secretions would hinder rather than help airway management.

Preoxygenation aims to maximize the body's oxygen reserves so you can tolerate a brief pause in ventilation during airway manipulation. After you preoxygenate, the lungs are filled with a high concentration of oxygen, replacing nitrogen. This creates a larger reservoir of oxygen that can be used if the next step requires a moment of apnea while you secure the airway. The result is a delay in the onset of hypoxia and a safer window to complete the procedure.

Sedating the patient is a separate consideration and not the purpose of preoxygenation. Likewise, preventing infection and increasing airway secretions are not goals of this step; infection control relates to sterile technique, and increasing secretions would hinder rather than help airway management.