Which of the following signs are not indicative of potential airway obstruction?

Taking deep, rapid breaths can actually indicate a variety of conditions, including anxiety or hyperventilation, rather than a direct sign of airway obstruction. In cases of airway obstruction, patients may exhibit shallow, labored breathing or may struggle to breathe adequately.

The other signs—being unable to speak, cyanosis (bluish discoloration of the skin), and weak coughing—are more clearly associated with airway obstruction. An inability to speak suggests significant difficulty in airflow, cyanosis indicates that oxygen saturation is dangerously low, and a weak cough can signal that the body is unable to effectively clear an obstruction. Thus, deep, rapid breaths do not align with the classical signs of an airway obstruction and point towards alternative respiratory states.