The Ambu-Aura GainTM 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, crossover study, the investigators test the hypothesis that ease of insertion, oropharyngeal leak pressure, fiberoptic position and ease of gastric tube placement differ between the Ambu-Aura GainTM and the LMA SupremeTM in paralyzed, anesthetized patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
200
ease of insertion, oropharyngeal seal pressure, fiberoptic position, ease of ventilation, occult blood, gastric tube insertion
Zentralkrankenhaus Bozen
Bolzano, Italy
Schulthess Klinik
Zurich, Switzerland
oropharyngeal seal 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 minutes
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 minutes
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