Which breath sound is associated with obstruction of the upper airway?

Which breath sound is associated with obstruction of the upper airway?

• A. Wheezes
• B. Crackles
• C. Rhonchi
• D. Stridor

Answer: (D)

Breath sounds help identify where the airway is compromised. Stridor is a high-pitched, harsh, inspiratory sound produced when air must squeeze through a narrowed or blocked upper airway, such as the larynx or trachea. This indicates obstruction at the top of the airway, caused by swelling, a foreign body, or other upper-airway issues. Wheezes, by contrast, are musical wheals that come from narrowed lower airways (like bronchioles) and are usually heard on expiration. Crackles are fine popping sounds from fluid or small-airway collapse in the lungs, often heard in conditions like pneumonia or edema. Rhonchi are coarse, rattling sounds from secretions in larger airways and can improve with coughing. So stridor specifically points to an upper-airway obstruction, differentiating it from lower-airway problems. In practice, it signals a potential airway emergency and requires prompt assessment and management.

Breath sounds help identify where the airway is compromised. Stridor is a high-pitched, harsh, inspiratory sound produced when air must squeeze through a narrowed or blocked upper airway, such as the larynx or trachea. This indicates obstruction at the top of the airway, caused by swelling, a foreign body, or other upper-airway issues.

Wheezes, by contrast, are musical wheals that come from narrowed lower airways (like bronchioles) and are usually heard on expiration. Crackles are fine popping sounds from fluid or small-airway collapse in the lungs, often heard in conditions like pneumonia or edema. Rhonchi are coarse, rattling sounds from secretions in larger airways and can improve with coughing. So stridor specifically points to an upper-airway obstruction, differentiating it from lower-airway problems. In practice, it signals a potential airway emergency and requires prompt assessment and management.