NCT04106635

Effect of Paratracheal Esophagus Pressure on the Insertion of Laryngeal Mask Airway

Effect of Pressure to Left Paratracheal Esophagus During the Insertion of Laryngeal Mask Airway

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 108 (actual)
• Sponsor: Ajou University School of Medicine · Academic / Other
• Sex: All
• Age: 19 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

Laryngeal mask airway is inserted into the oral cavity and seals the upper esophagus and the surrounding tissue, effectively securing airway. Laryngeal mask airway has been widely adopted in the clinical practice. On the other hand, cricoid pressure has been used to reduce the risk of pulmonary aspiration of gastric contents during induction of general anesthesia. However, cricoid pressure might impede placement of the laryngeal mask airway, thereby preventing effective ventilation. Recently, left paratracheal pressure was introduced as an alternative to cricoid pressure and reported to be more effective than cricoid pressure in the prevention of gastric air insufflation during positive-pressure ventilation by facemask. Since this method compresses low left paratracheal level, it may affect the successful insertion of laryngeal mask airway. In this study, the investigators aimed to evaluate the effect of paratracheal esophagus pressure on the insertion of laryngeal mask airway compare to conventional cricoid pressure.

Conditions

• General Anesthesia
• Pulmonary Aspiration

Interventions

Type	Name	Description
PROCEDURE	Paratracheal pressure	To apply paratracheal pressure, the thumb was placed over the left side of the trachea cephalad to the clavicle and medial to the sternocleidomastoid muscle.
PROCEDURE	Cricoid pressure	To apply cricoid pressure, the cricoid cartilage is compressed by 30N force with a single-handed three finger maneuvre towards the vertebral bodies.

Timeline

• Start date: 2020-01-02
• Primary completion: 2020-07-17
• Completion: 2020-07-17
• First posted: 2019-09-27
• Last updated: 2021-01-13

Locations

1 site across 1 country: South Korea