The LMA ProtectorTM is a new extraglottic airway device which brings together features of both the LMA ProSealTM (high seal cuff, gastric access and bite block - to facilitate ventilation, airway protection and airway obstruction, respectively) and the LMA UniqueTM (single use - prevention of disease transmission). In the following randomized study the investigators test the hypothesis that ease of insertion, oropharyngeal leak pressure, fiberoptic position and ease of gastric tube placement differ between the LMA ProtectorTM and the Ambu AuraGainTM in paralyzed, anesthetized patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
96
function tests: ease of insertion, oropharyngeal seal pressure, fiberoptic position, ease of ventilation, occult blood, gastric tube insertion
Schulthess Klinik
Zurich, Canton of Zurich, Switzerland
Christian Keller MD, M.Sc.
Zurich, Switzerland
oropharyngeal leak pressure
Oropharyngeal leak pressure was determined by closing the expiratory valve of the anesthesia breathing system and a fixed gas flow of 3 l minute-1. The airway pressure at which an equilibrium was reached was noted (maximum allowed 40 cm H2O).
Time frame: 5 min
anatomic position
The anatomic position was assessed by passing a fiberoptic scope through the airway tube stopping 0,5 cm prior to the end of the tube. The airway tube view was scored using an established scoring system.
Time frame: 5 min
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