What is the most common cause of airway obstruction?

The most common cause of airway obstruction is foreign body obstruction, such as food or small objects. This type of obstruction occurs frequently in both adults and children, particularly during eating or playing. When a large enough object becomes lodged in the airway, it can completely block airflow, leading to suffocation if not promptly addressed.

In children, for instance, small toys and food items are common culprits due to their natural tendency to explore their environment by putting objects in their mouths. In adults, situations such as eating hastily can lead to choking incidents with food items. Immediate recognition and response to this type of airway obstruction is critical, making it an essential area of training for first responders.

While swelling in the throat, excessive fluid in the lungs, and allergic reactions can also cause airway issues, they are less common causes compared to the more frequent instances of choking on a foreign object. Each of these conditions can lead to airway compromise, but they do not occur as commonly as foreign body obstruction in emergency situations.