Table 2

Outcome measurements during the study period

ESPB group
Control group
P value*†
Mean PACU discharge time (SD) (min)17.2 (2.7)28.4 (2.9)<0.001
Median cumulative opioid consumption (IQR) (μg)24 (24–28)40 (36–42)<0.001
Occurrence of PONV, n (%)3 (7.7)9 (22.5)0.07
Occurrence of dizziness, n (%)1 (2.6)5 (12.5)0.20
  • *P value compares the ESPB group with the control group.

  • †t-test was used to compare means; Mann-Whitney U-test was used to compare medians; χ2 test was used to compare proportions of PONV; and Fisher’s exact test was used to compare proportions of dizziness.

  • ESPB, erector spinae plane block; IQR, interquartile range; PACU, postanesthesia care unit; PONV, postoperative nausea or vomiting; SD, standard deviation.