Hypopharyngeal seal pressure during projectile vomiting with the ProSeal laryngeal mask airway: a case report and laboratory study.

摘要

A principal advantage of the ProSeal~(TM) laryngeal mask airway (PLMA; Laryngeal Mask Company, Henley-on-Thames, UK) over the Classic~(TM) laryngeal mask airway is better protection against gastric aspiration.1 A critical factor contributing to airway protection is, the efficacy of the seal with the hypopharynx. We found this to be as high as 73 cm H_2O, however, there are no data from anesthetized patients. We present a case of projectile vomiting via the drain tube of the PLMA that allowed us to perform a laboratory study to estimate the hypopharyngeal seal based on the distance the fluid traveled.