Upper airway resistance during use of a laryngeal mask airway is flow-dependent and dominated by the laryngeal resistance.

ABSTRACT: During use of a laryngeal mask airway, resistance of the device and larynx contribute to the upper airway resistance. Detailed understanding of this combined resistance is crucial to support spontaneously breathing patients appropriately or to take the right measures during respiratory problems. However, their resistive behavior and which of these components determine the upper airway resistance predominantly, has not been characterized systematically. Pressure-flow-relationships of different sizes of a laryngeal mask airway, of a laryngeal model with vocal cord angles between 10° and 60° and of the combination of a laryngeal mask airway size 4 and the laryngeal model were measured. Results were fitted to the expanded Rohrer's equation and resistances were calculated. The laryngeal mask ai

SUBMITTER: Hell J 

PROVIDER: S-EPMC11464783 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature