Adjuvants in transversus abdominis plane blocks to prolong analgesia duration following cesarean delivery: A systematic review and network meta-analysis

With the high heterogeneity and the low or very low quality of the evidence, clonidine, dexamethasone, and dexmedetomidine may prolong analgesia after CD without intrathecal morphine when used as adjuvants in TAP blocks. Furthermore, dexamethasone and dexmedetomidine appear preferable when basic analgesics are administered. Nevertheless, these results should be interpreted with caution.