Monitoring of oropharyngeal leak pressures using cuff manometer/cuff inflator device

Determining airway sealing pressure /oropharyngeal leak pressure (OLP) is commonly used parameter to access efficacy and functional analysis of supraglottic airway devices. Standard measurement of OLP in a landmark article by Keller et al [1] describes closure of the expiratory valve of anesthesia breathing system and the fresh gas flow is adjusted to 3 L · min−1. OLPs are measured to within 0.5 cm H2O using a calibrated aneroid manometer attached to the proximal end of the laryngeal mask airway or the desired supraglottic airway device.

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