<qa>  What is the dose of Paracetamol?Subjects will receive a nausea and vomiting prophylaxy depending on Apfel score After surgery, the two intervention groups will receive before waking a dose of Paracetamol 1 g and Diclofenac 75 mg, if they present no contraindications and a dose of 0.05 mgkg Piritramide . 