 Intravenous remifentanil 0.1-0.5 microgramskgmin Intravenous Propofol target controlled or sevoflurane Intermittent ventilation using O2 40 - 100, with or without compressed air. Before incision: 5mL of bupivacaine 0.5 or saline solution 0.9 from the aponeurosis until the skin In the end of the procedure: intravenous 4mg of dexamethasone 40mg of tenoxican 