Supreme LMA and Proseal LMA in Prone Anesthetized Patient

Comparison of the Effectiveness Between the LMA SupremeTM and the LMA ProsealTM for Airway Management in Patient Undergoing Elective Orthopaedic Surgery in Prone Position

There is no significant difference about success rate of two devices.

There is no significant difference about success rate of two device: efficacy and safety

Inclusion Criteria:

• American Society Anesthesiologists physical status I-III
• Patient undergo elective orthopedics surgery in prone position under general anaesthesia

Exclusion Criteria:

• Age <15year
• Non-fast
• Morbid obesity (BMI > 35kg/m2)
• Pregnancy
• Known or predicted difficult airway
• GERD
• History of laryngeal problem (injury,subglottic stenosis)
• Local pharyngeal problem (abscess,tumor)
• Poor dentation
• Pulmonary disease