Electromyographic Calibration Guided by Depth of Anesthesia

Inclusion Criteria: * signed informed written consent * BMI 17.5-30 kg/m\^2 * ASA \<= 3 * supine positioning during surgery with intraoperative access to both arms * absence of allergy to muscle relaxants and reversal agents * absence of neuromuscular disease Exclusion Criteria: * ambulatory patients for whom discharge is planned within 12 hours of anaesthesia * patients undergoing minor surgical * procedures scheduled outside the operating room * patients who are endotracheally intubated prior to surgery * pregnancy * indication for rapid sequence induction * patients undergoing arm surgery * patients with preceding injuries impairing muscle or nerve function of the arm (e.g., finger amputation)