Inhaled toxic gas exposure with an abnormal inspiratory sound, which sound is most concerning?

• A. Crowing
• B. Stridor
• C. Gurgling
• D. Snoring

Answer: (B)

Inhaled toxic gas can cause rapid swelling and irritation of the upper airway, leading to narrowing that can quickly become life-threatening. Stridor is a high-pitched, harsh inspiratory sound produced when air is forced through a constricted upper airway. This sound directly signals significant airway compromise from edema or inflammation, which is why it’s the most concerning in this situation.

Gurgling means there are secretions or fluids in the airway, which is serious and needs suctioning and airway management, but it doesn’t inherently indicate the same immediate risk of complete airway collapse as stridor. Snoring suggests partial obstruction in the oropharynx and can worsen, but it’s generally less alarming than stridor in the setting of inhalation injury. Crowing is another noisy breath but does not pinpoint as clearly and urgently as stridor the presence of a critical airway narrowing.