Protector™ Versus Supreme® Laryngeal Mask Airway

Prospective Randomised Trial of the Protector™ Versus the Supreme® Laryngeal Mask Airway

The goal of this study is to compare the oropharyngeal leak pressure of the Protector Laryngeal mask with the Supreme laryngeal mask. Other secondary parameters will be studied.

The OLP as the primary outcome measurement will be evaluated after insertion of the LMA in each group. We hypothesize that there will be a difference of 4 cm H2O between the 2 masks, because of the different material and slightly different form of the masks. Secondary outcomes will be measured after insertion of the LMA as by protocol. Finally postoperative airway morbidity will be evaluated 3 hours after removal of the LMA.

Inclusion Criteria:

• Age between 18-75
• ASA 1-3
• Operation on limbs
• written informed consent

Exclusion Criteria:

• known difficult airway
• anatomical abnormalities on airway, Larynx, oesophagus, stomach
• not fastened
• high aspiration risk
• patients with contraindication of laryngeal mask
• BMI >35 kg/m2
• patients with disease which impairs accurate Investigation of patient
• cardiovascular risk factors
• COPD
• acute disease where anaesthesia is in doubt
• no written consent