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  • Title: A Randomised Controlled Trial to Evaluate the Effectiveness of Intrathecal Bupivacaine Combined with Different Adjuvants (Fentanyl, Clonidine and Dexmedetomidine) in Caesarean Section.
    Author: Li Z, Tian M, Zhang CY, Li AZ, Huang AJ, Shi CX, Xin DQ, Qi J, Li KZ.
    Journal: Drug Res (Stuttg); 2015 Nov; 65(11):581-6. PubMed ID: 25504002.
    Abstract:
    PURPOSE: The purpose of this study was to evaluate comparatively, in women undergoing caesarean section under spinal anesthesia, the effectiveness of hyperbaric bupivacaine combined with 3 different adjuvants (fentanyl, clonidine, and dexmedtomidine) on quality of blockade and maternal and neonatal repercussions. METHOD: 84 patients undergoing elective surgeries under spinal anesthesia were randomized into 4 groups of 21 each, gB, gBF, gBC and gBD. Patients in groups gb, gBF, gBC and gBD were given bupivacaine alone, bupivacaine plus fentanyl (15.0 µg), bupivacaine plus fentanyl plus clonidine (75 µg), and bupivacaine plus dexmedetomidine (10 µg), respectively. Hemodynamic parameters evaluated were the onset and level of sensory block, perioperative analgesia, degree and recovery time of motor block, duration of analgesia, sedation, and maternal-foetal repercussions. RESULTS: The onset of blockade was significantly faster in groups with adjuvants clonidine and dexmedetomidine compared with gB and gBF. Patients in Groups gB and gBF reported pain during the perioperative period. Duration of analgesia was significantly higher in Group gBD and was comparable to gBC and time to motor block recovery was significantly higher in Group gBD. Sedation was significant in Group gBD and gBC. CONCLUSION: Addition of dexmedetomidine and clonidine as adjuvants to hyperbaric bupivacaine provided adequate anesthesia and postoperative analgesia compared to fentanyl adjuvant without causing any significant side effects.
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