What is the definition of "mechanical obstruction" in CPR parameters?

The definition of "mechanical obstruction" in the context of CPR parameters refers specifically to the blockage of the airway, which prevents normal airflow. This blockage can occur due to foreign bodies, such as food or objects lodged in the throat, or other causes that obstruct the passageway through which air travels to the lungs. When an airway obstruction occurs, it can lead to ineffective breathing and insufficient oxygen levels, making it critical for responders to recognize and resolve such an obstruction promptly during emergencies.

When performing CPR, ensuring that the airway is clear is paramount because it directly impacts the effectiveness of ventilation. If the airway is obstructed, even the best chest compressions will not result in adequate oxygenation for the patient. Hence, recognizing and addressing mechanical obstruction is a key aspect of emergency response in CPR situations.