الفهرس 
Effects of using dexmedetomidine as an adjuvant drug to bupivacaine in ultrasound guided rectus sheath block on post-operative analgesia in major pelvi-abdominal surgery in cancer patient A comparative study
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Abstract
This study was designed to compare the effectiveness of dexmedetomidine as an adjuvant to bupivacaine used for rectus sheath block in controlling postoperative pain in cancer patients undergoing major abdominal surgery under general anesthesia for treatment of their conditions. We can conclude that: The addition of dexmedetomidine 2 æg/kg to bupivacaine 0.25% in bilateral rectus sheath block is a safe and effective modality for management of postoperative pain in cancer patients undergoing midline abdominal surgery under general anesthesia. Dexmedetomidine prolonged the duration of analgesia, delayed the request for rescue analgesia and reduced the total postoperative opioid consumption. Dexmedetomidine administration was not associated with increased postoperative nausea and vomiting. No cases of clinically significant bradycardia or hypotension were recorded. Rectus sheath block under ultrasound guided was successful in all attempted cases