Fig. 2

Sufentanil consumption at 24 h postoperatively among the three groups. Abbreviations: ESPB, erector spinae plane blocks; SAPB, serratus anterior plane blocks. The middle line in the plot boxes represents the median values, while the boxes indicate the interquartile range. The whiskers extend to the most extreme observed values within 1.5 times the interquartile range of the nearer quartile