Results
From June to December 2020, 79 women were screened, and 67 subjects were recruited and randomized into two groups. Seven participants were excluded due to delivery within one hour or unilateral blockage, and data were collected from 60 subjects (Fig. CONSORT trials flow diagram. The control group (CON), the conventional PIEB group; The intranasal dexmedetomidine group (IND), the PIEB with intranasal dexmedetomidine group; PIEB, programmed intermittent epidural bolus. CONSORT, Consolidated Standards of Reporting TrialsDemographic and baseline characteristics of parturientsValues are presented as mean ± SD, n (%) or median (95% CI) depending on the distribution of the sample. 