title: Randomized controlled trial.
authors.forename: Alvaro
authors.initials: A
authors.lastname: Sanabria
mesh_terms: D000779:Anesthetics, Local / Q000008:administration & dosage*; D001062:Appendectomy / Q000009:adverse effects*; D002045:Bupivacaine / Q000008:administration & dosage*; D006801:Humans; D010147:Pain Measurement; D010149:Postoperative Pain / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control*; D011300:Preoperative Care
chemical_list: D000779:Anesthetics, Local; D002045:Bupivacaine