Table 3

Block procedure data

FactorESPB (n=50)PVB (n=50)P value
Median time to perform procedure in min/side (IQR)1.9 (1.0–2.5)4.1 (3.3–6.4)<0.001
Median fentanyl requirement during block procedure in µg (IQR)50 (50–50)50 (50–50)0.525
Average NRS pain during block (IQR)2.0 (1.0–2.0)2.0 (1.0–2.0)0.609
Worst NRS pain during block (IQR)2.0 (2.0–4.0)3.5 (2.0–4.8)0.054
  • Test used: Wilcoxon-Mann-Whitney test.

  • ESPB, erector spinae plane block; NRS, Numeric Rating Scale; PVB, paravertebral block.