Airway Patency, Obstruction and Opening Maneuvers

Principles of Airway Patency and Rapid Assessment

A patent airway is open, clear, and allows the completely unobstructed movement of air into and out of the lungs. In emergency care, evaluating and securing the airway is the foundational first step of patient stabilization. Airway assessment is the first priority in the primary assessment immediately after addressing catastrophic external hemorrhage. Without an open passage for airflow, all subsequent interventions to support breathing or circulation cannot succeed.

Evaluating patency requires an active, systematic approach using your primary senses: looking, listening, and feeling. The EMT must look for chest rise, listen for airflow and abnormal sounds, and feel for air movement at the patient's mouth and nose. When an alert patient answers your initial questions by speaking in normal, full sentences, you can immediately confirm that the airway is open and patent. In contrast, observing chest movement without airflow from the mouth or nose strongly suggests an airway obstruction. EMTs should note that paradoxical chest movement alone does not establish a completely blocked airway, reinforcing the necessity of feeling for true air movement.

An unresponsive patient is inherently at high risk for airway obstruction due to the loss of upper airway muscle tone. When an individual experiences profound unresponsiveness or cardiac arrest, the normal muscular control that keeps the soft tissues suspended collapses. The tongue relaxing into the posterior pharynx is the most common cause of airway obstruction in an unresponsive patient. Furthermore, because profound unresponsiveness allows the tongue and other soft tissues to collapse into the airway, these patients may also lose their protective airway reflexes, placing them at severe risk of aspiration. An EMT must never rely on the presence or absence of a gag reflex to determine whether a patient's airway is protected.

Because a patient's clinical status is dynamic, airway patency is never established just once. An airway that is initially open can quickly become compromised due to progressive swelling, sudden regurgitation, or worsening mental status. Airway patency must be continually reassessed throughout transport to ensure that air exchange remains intact.