The present study aims to compare the pre-emptive analgesic efficacy of parecoxib 40 mg IV/IM versus placebo on reducing postoperative acute pain following submuscular breast augmentation. Additionally this study is being conducted to evaluate the safety and tolerability of parecoxib in this kind of procedure.

Inclusion Criteria:

• Female patients of any ethnic origin aged 18 years or over.
• The patient is post-menopausal, surgically sterile, or using adequate contraception, not lactating, with a negative urine pregnancy test at screening, prior to administration of study medication.
• The patient's preoperative health is graded as a class I or II according to the ASA physical status classification and on the basis of medical history and physical examination.

Exclusion Criteria:

• The patient has significant clinical signs and symptoms suggestive of renal or hepatic morbid conditions
• The patient has a history of clinically significant hypersensitivity to any NSAIDs, cyclooxygenase inhibitors, analgesics or sulfa medications which has a cross sensitivity to the medications used in this study.
• The patient used analgesics or other agents (antidepressants, sedating antihistamines or other sedatives, muscle relaxants, narcotics, or corticosteroids) during the four hours preceding the procedure that could confound the analgesic responses.
• Subjects with a history of established ischemic heart disease (e.g. myocardial infarction, stable angina, unstable angina), peripheral arterial disease and/or cerebrovascular disease (e.g. ischemic or hemorrhagic stroke, transient ischemic attack), as well as subjects with previous revascularization procedure to coronary, carotid, cerebral, renal, aortic or peripheral arterial vasculature