Aminophylline is an intravenous drug commonly utilized for asthma. However, some preclinical studies and few case reports and case series have described its utility in decrease the timing of return of consciousness after Propofol anaesthesia with an intravenous bolus of 4 mg/kg.

We aimed to compare its effect during a total Intravenous Anaesthesia with Target Controlled Infusion (TIVA-TCI) routinely utilized for general anaesthesia in our hospital.

Aminophylline is an intravenous drug commonly utilized for asthma. However, some preclinical studies and few case reports and case series have described its utility in decrease the timing of return of consciousness after Propofol anaesthesia with an intravenous bolus of 4 mg/kg.

We aimed to compare its effect during a total Intravenous Anasethesia with Target Controlled Infusion (TIVA-TCI) routinely utilized for general anaesthesia in our hospital (with Eleveld or Schnider Pharmacokinetic/Pharmacodynamic-PK/PD model).

The timing from stop of propofol infusion to eye opening and return of responsiveness, the relative Concentration of Propofol (CeP) and the power spectrum of the Bispectral Index (BIS) with or without aminophylline bolus were taken into account.

Inclusion Criteria:

• Undergo general anaesthesia with Targeted Controlled Infusion of Propofol (Eleveld or Schnider model) and Remifentanil (Minto model)

Exclusion Criteria:

• Neurological disease
• Psychiatric disease
• Obesity

Women undergoing brast cancer surgery with general anesthesia with Propofol and Remifentanil TCI, with or without aminophylline bolus at the end of surgery will be recruited