Comparison of pain in patient under going major surgery under general anaesthesia vs general and Epidural anaesthesia

Intervention1: General anaesthesia and epidural anesthesia vs only general anaesthesia and periopertive analgesia: 0-3-6-12-24hr Dose of ropivacaine 0.3/cc @4ml/hr acc to pt profile dose will be increased Control Intervention1: General anaesthesia only and periopertive analgesia: 0-3-6-12-24hr Primary outcome(s): Vas score assessment and need for inhalation agent perioperative periodTimepoint: 0-3-6-12-24hr Study Design: Randomized, Parallel Group Trial Method of generating randomization sequence:Computer generated randomization Method of allocation concealment:Sequentially numbered, sealed, opaque envelopes Blinding and masking:Participant and Outcome Assessor Blinded