Effect of low‐dose dexmedetomidine or clonidine on the characteristics of bupivacaine spinal block

Background: The purpose of this study was to compare the onset and duration of sensory and motor block, as well as the hemodynamic changes and level of sedation, following intrathecal bupivacaine supplemented with either dexmedetomidine or clonidine. Methods: In a prospective, double‐blind study, 60 patients undergoing transurethral resection of prostate or bladder tumor under spinal anesthesia were randomly allocated to one of three groups....