Storage capacities of the laryngeal mask and laryngeal tube compared and their relevance to aspiration risk during positive pressure ventilation.
Supraglottic airways used for positive pressure ventilation run the occasional risk of regurgitated liquid entering the lungs (aspiration). A dynamic model described here shows that the laryngeal tube has a larger liquid storage capacity between the two cuffs than the bowl of the laryngeal mask, with a consequent smaller aspiration risk.
Miller
Donald M
DM
Department of Anaesthetics, Guy's, King's and St. Thomas' School of Medicine, King's College, London.
Light
Derek
D
D007442:Intubation, Intratracheal / Q000295:instrumentation*; D017214:Laryngeal Masks; D008168:Lung / Q000033:anatomy & histology / Q000502:physiology; D008953:Models, Anatomic; D010614:Pharynx / Q000033:anatomy & histology / Q000502:physiology; D011015:Pneumonia, Aspiration / Q000453:epidemiology*; D011175:Positive-Pressure Respiration / Q000009:adverse effects*; D012826:Silicone Elastomers
D012826:Silicone Elastomers