To find out if there is a benefit from adding dexmedetomidine to epidural bupivacaine as regards: * Intra and postoperative opioid consumption * Pain score (numerical rating scale) * Hemodynamic stability, * Patient satisfaction.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Total amount of morphine consumption in milligram in the first 24-hour postoperative in the two groups
Timeframe: 24 hours