Comparing Effect of Adding Ketamine Versus Dexmedetomidine to Bupivacaine in Pecs-ⅠⅠ Block on Postoperative Pain Control in Patients Undergoing Breast Surgery Hefni, Amira F.; Eldeek, Abeer M.; Ismael, Shereen A.; More Hefni, Amira F.; Eldeek, Abeer M.; Ismael, Shereen A.; Shaban, Ahmed R. Less The Clinical Journal of Pain. 38(9):568-574, September 2022. Abstract Abstract Favorite PDF Permissions Buy