Comparative effect of intraoperative propacetamol administration versus placebo on morphine consumption after elective reduction mammoplasty

INTERVENTION: Intraoperative administration of propacetamol or placebo CONDITION: Morphine consumption and postoperative pain after intraoperative administration of placebo or propacetamol ; Surgery ; Pain, not elsewhere classified PRIMARY OUTCOME: Cumulative dose of morphine administered in the recovery room. SECONDARY OUTCOME: The secondary end‐points were the pain score after tracheal extubation and one hour after, the delay for obtaining a Simplified Numerical Pain Scale (SNPS) less than 4, and the incidence of morphine side effects in the recovery room. INCLUSION CRITERIA: 1. Informed consent adult women above 18 years 2. American Society of Anesthesiologists (ASA) I and II