Pain after cancer surgeries procedures can be severe. Pain management is based on a subjective criterion, and works best when patient is able to understand and communicate his level of pain. The adequacy of analgesic administered is also decided according to improvement in the subjective parameters which may vary from person to person. These variations are difficult to standardise. Hence objective criteria to guide pain management may be of certain help as an adjunct to the subjective criterion. Perfusion index is a parameter obtained non-invasively by a pulse oximeter probe. (Probe attached to a finger that gives a reading of level of oxygen on monitor) Perfusion index may be used as a objective criteria for pain assessment.

If you agree to participate in the study, the following which will be monitored ( HR, blood pressure ,oxygen saturation and perfusion index) during your stay in the recovery room, post surgery,  as per standard of care, will be recorded for study purpose. All the above parameters will be noted half hourly for 2 hours in recovery room. Pain scores (NRS) will be noted hourly. Whenever patient has moderate to severe pain rescue pain killer (injection tramadol) will be given. The parameters (HR, BP, Perfusion index, oxygen saturation, and temperature) will be noted prior to administration of pain killer and 30 minutes after the administration of pain killer. The change in perfusion index as well as its correlation with pain scores will be noted