Cough Reflex Test (CRT) Practice

Stridor is a high-pitched, wheezing sound resulting from turbulent airflow caused by narrowing in the upper airway, often indicating an obstruction. This condition can arise from various sources, such as swelling of the larynx, foreign body obstruction, or other structural abnormalities affecting the upper respiratory passages. It is particularly associated with conditions that compromise the normal flow of air through the trachea and larynx. In contrast, the lower respiratory tract, which includes the bronchi and lungs, is more commonly associated with other types of respiratory sounds, such as wheezing from bronchospasm or crackles due to fluid in the alveoli. Therefore, while stridor distinctly relates to problems occurring in the upper airway, other options pertain to areas that do not typically manifest stridor as a clinical sign.