What does the medical term "stridor" indicate?

The term "stridor" specifically refers to a high-pitched, wheezing sound that occurs during inhalation, often as a result of an obstruction in the upper airway. It is usually associated with conditions that cause narrowing or blockage of the air passages, such as croup, foreign body aspiration, or laryngeal edema. The high pitch is a key characteristic that differentiates stridor from other breathing sounds, such as wheezing, which is typically lower in pitch and associated with lower airway issues.

In clinical practice, recognizing stridor is critical because it can indicate a potentially life-threatening situation requiring urgent medical attention. The presence of stridor prompts healthcare providers to assess the degree of airway obstruction and act accordingly, making it essential to understand this sound and its implications for patient care.