What is the primary reason cricoid pressure is applied during rapid-sequence induction?

The primary reason cricoid pressure is applied during rapid-sequence induction is to prevent gastric contents from entering the pharynx. This maneuver, also known as the Sellick maneuver, involves exerting pressure on the cricoid cartilage, which compresses the esophagus against the cervical vertebrae. By doing this, it creates a barrier that reduces the risk of regurgitation and aspiration of stomach contents into the airway during the induction of anesthesia.

This is particularly important in patients who are at increased risk for aspiration, such as those with a full stomach due to recent food intake, trauma, or gastrointestinal issues. By maintaining a clear airway and minimizing the risk of aspiration during rapid-sequence induction, cricoid pressure plays a crucial role in ensuring patient safety and reducing complications related to airway management.