Inclusion Criteria:  Ages between 18 and 65 Patients in American Society of Anesthesiologists Classification I or II Elective laparoscopic cholecystectomy surgery performed under general anesthesia  Exclusion Criteria:  Patient refusal Patients who can not provide informed consent or with a known psychiatric disease Patients with a known allergy to study drugs Patients using anticoagulants and corticosteroids Patients with diaphragma hernia, chronic obstructive pulmonary disease, lung cancer Patients who are not able to use a patient controlled analgesia device