Safety and Efficacy of the LMA Supreme When Inserted With Patients in the Prone Position

Inclusion Criteria: * 18 to 70 years of age * American Society of Anesthesiology Classification (ASA) I-III patients * Fasting for 8 hours * Scheduled surgery with indication for laryngeal mask airway Exclusion Criteria: * Have contraindicating conditions * Have had radiotherapy to the neck involving the hypopharynx (risk of trauma, failure to seal effectively). * Have inadequate mouth opening to permit insertion * History of hiatal hernia * Scheduled for minimally invasive spine stabilization procedures such as Transforaminal Lumbar Interbody Fusion (TLIF), Anterior Cervical Discectomy and Fusion (ACDF) (all have neuromonitoring/general endotracheal intubation) * Scheduled for Joimax procedure (initial anesthetic is MAC) * Unable to safely position themselves prone with assistance * History of previous failed LMA Supreme placement * BMI greater than or equal to 53 * Outside age or ASA range specified in inclusion criteria * Inability to comply with study requirements including follow-up