What is the primary purpose of the Sellick Maneuver during intubation?

The Sellick Maneuver, also known as cricoid pressure, is primarily used to apply pressure on the cricoid cartilage during intubation. This maneuver aims to occlude the esophagus, which is located immediately behind the trachea, thereby reducing the risk of aspiration of stomach contents into the airway. By compressing the cricoid cartilage, the technique helps to create a barrier that minimizes the chance of regurgitation during intubation, which is particularly critical in patients who may have a full stomach or are at risk for aspiration.

While preventing aspiration is an important aspect of intubation practices, the specific mechanism of the Sellick Maneuver is centered on the application of pressure to the cricoid cartilage itself. This is also why drug absorption and intravenous access are not relevant to the Sellick Maneuver's primary purpose, as these focus on medication delivery and fluid management rather than airway protection during intubation.