['appendicitis']
['ropivacaine', 'normal saline']

        Inclusion Criteria:

          -  Children and adolescents aged 7-18 years old

          -  ASA Score I (American Society of Anesthesiologists classification) [Appendix 1]: a
             normal healthy patient.

          -  ASA Score II (American Society of Anesthesiologists classification): A patient with
             mild systemic disease

          -  Patients scheduled for laparoscopic appendectomy surgery

          -  Uncomplicated appendicitis

               -  Hemodynamically stable patient

               -  No evidence of appendiceal perforation based on preoperative clinical and imaging
                  assessment

               -  Diagnosed to have simple acute appendicitis by intraoperative laparoscopy

          -  Patients who have provided a written informed assent

          -  Caregivers who have provided a written informed consent

        Exclusion Criteria:

          -  ASA Score III (American Society of Anesthesiologists classification): A patient with
             severe systemic disease

          -  ASA Score IV (American Society of Anesthesiologists classification): A patient with
             severe systemic disease that is a constant threat to life

          -  ASA Score V (American Society of Anesthesiologists classification): A moribund patient
             who is not expected to survive without the operation

          -  Hemodynamically unstable patient

          -  Evidence of appendiceal perforation on based on preoperative clinical and imaging
             assessment

          -  Perforated or gangrenous appendicitis diagnosed during laparoscopic surgery

          -  Postoperative admission in an intensive care unit with sedation or ventilatory
             assistance

          -  Cognitive impairment or mental retardation

          -  Progressive degenerative diseases of the CNS

          -  Seizures or chronic therapy with antiepileptic drugs

          -  Severe hepatic or renal impairment

          -  Allergy to one of the specific drugs under study

          -  Alcohol or drug addiction

          -  Failure to successfully undergo a laparoscopic appendectomy

          -  A significant communication problem including language barrier, precluding phone
             follow up

          -  Participation in a concomitant research study

          -  Inability to assure complete follow up

          -  Failure to acquire informed consent and assent
      