Double blinded Randomised Comparative Study of the Effect of Single Preoperative dose of IV Dexmedetomidine vs Fentanyl on the Hemodynamic Stress Responses in Peadiatric patients undergoing Adenotonsillectomy Surgery

In this study we will be giving 2   pain relieving medications namely fentanyl and dexmedetomidine  (medication defined by randomisation) to the  child before the surgery starts in the holding area.  Every child has 50% chance of receiving the drug, depending upon the randomisation. The child will be given a general anaesthesia and will be monitored during the surgery for the effects of these drugs. We will also monitor after the surgery for any restlessness at the end of surgery or later, pain intensity, need for any further drugs to calm the child or pain relief medications.