What is the purpose of cricoid pressure?

Cricoid pressure, also known as the Sellick maneuver, serves specifically to prevent passive regurgitation of stomach contents into the lungs during intubation procedures. This technique involves applying pressure to the cricoid cartilage in the neck, which compresses the esophagus located behind it, thereby reducing the risk of aspiration. Aspiration of stomach contents can lead to serious complications such as pneumonia, making this technique crucial during the induction of anesthesia when the risk of vomiting can increase.

The other options do not accurately describe the primary purpose of cricoid pressure. Enhancing blood flow during CPR, facilitating lung examinations, and controlling bleeding during operations are not relevant to the specific function of cricoid pressure, which is limited to protecting the airway during intubation by minimizing the risk of aspiration. Understanding this context is important for medical professionals to ensure safe practices during procedures involving airway management.