Introduction: Pain is defined as “As unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage”. Pain is an inevitable consequence of surgery. Surgical intervention done to reduce human suffering is associated with pain and distress to patients. Severe pain causes increased stress response to surgery, seen as a cascade of endocrine, metabolic and inflammatory events that may contribute to organ dysfunction, morbidity, increased hospital stay and mortality.