Inhalational anesthetics, when used in abdominal surgery, offer advantages of lung protection and reduced alveolar inflammation. There is little literature, however, in the comparative use of sevoflurane versus desflurane anesthesia in patients undergoing abdominal robotic-assisted surgery and their effects on lung mechanics.

Inclusion Criteria:

• Age 18 to 87 years
• Undergoing elective robotic-assisted abdominal surgery
• ASA physical status I-III

Exclusion Criteria:

• ASA IV or V
• Emergency surgery
• Renal insufficiency
• Clinically significant respiratory disease
• Cardiomyopathy
• Uncontrolled hypertension