Comparison of ProSeal Laryngeal Mask Airway to Laryngeal Mask Airway Supreme

A Randomized Controlled Trial Comparing the ProSeal Laryngeal Mask Airway With the Laryngeal Mask Airway Supreme in Mechanically Ventilated Patients

Laryngeal mask airway is a widely used device in routine anesthesia for airway management during surgery. It consists of a tube with an inflatable cuff that is inserted into the mouth after induction of general anesthesia. The Proseal Laryngeal mask airway and the Laryngeal mask airway Supreme are two variants of the Laryngeal mask airway. The laryngeal mask airway Supreme is a newer version of the laryngeal mask airway.

The research is being done to compare two variants of the laryngeal mask airway: the Proseal laryngeal mask airway and the Laryngeal mask airway Supreme. This study will determine if the newer model, the Laryngeal mask airway Supreme, is easier to insert and is better positioned than the older model, the Proseal laryngeal mask airway. Both models are approved for use by the FDA, and are routinely used to assure the airway during general anesthesia.

Inclusion Criteria:

• 18 - 75 years
• ASA I and II
• Mallampatti class: I and II
• Thyromental distance > than 6.5 cm
• Interincisor distance > than 3 cm
• BMI < 35 Kg/m2
• Patients scheduled to undergo anesthesia with an LMA for minor extraperitoneal surgical procedures in supine position

Exclusion Criteria:

• Weight < 50 kg
• BMI > 35 Kg/m2
• Pregnant patients
• Known or expected difficult airway
• Patients with active, untreated and unresolved gastroesophageal reflux
• Esophageal pathology, pulmonary pathology
• Laparoscopic procedures
• ENT procedures, gastrointestinal procedures, intraperitoneal surgical procedure