This document discusses airway obstruction, including its definition, causes, signs and symptoms, and emergency treatment. Airway obstruction is a medical emergency that can lead to respiratory arrest if not addressed promptly. Causes include foreign objects like food or toys becoming lodged in the trachea or bronchi. Signs may include clutching the neck, difficulty speaking or breathing. Emergency treatment involves back blows, chest thrusts or Heimlich maneuver to dislodge the obstruction, as well as advanced procedures like cricothyrotomy or endotracheal intubation if needed. Prevention strategies are also outlined.