ObjectivesIn this study, we aimed to compare the effects of bupivacaine alone and in combination with dexmedetomidine on postoperative analgesia, neonatal Apgar score, and bispectral index (BIS), which has been shown to correlate with increased sedation and loss of consciousness in women undergoing cesarean section under spinal anesthesia.MethodsA total of 152 term parturient women scheduled to have elective cesarean section with American Society of Anesthesiologist (ASA) physical status I or II were allocated randomly into two groups to receive either bupivacaine plus placebo (BV group) or bupivacaine plus dexmedetomidine (BVD group). BIS, sedation scale scores, Apgar scores, and hemodynamic characteristics were recorded and statistically compared between the groups.ResultsOnset of post-operative pain was delayed in the BVD group. Sedation score (Ramsay sedation section) was improved in the BVD group with the least values of 0 - 3 followed by 1 - 4. There was no significant difference in Apgar score between the two groups. Also, there was a significant distinction between the two groups in terms of BIS during cesarean section.ConclusionsThe use of intrathecal dexmedetomidine as an adjuvant to bupivacaine in cesarean surgeries provides better intra-operative and post-operative analgesia without any significant impact on Apgar scores or incidence of side effects.