Table 2

Postintervention assessment

ESPB (n=35)Intravenous (n=35)P value
Mean reduction in NRS (±SD)
 <1 hour7.0 (±1.6)4.4 (±2.0)<0.001
 1–3 hours6.7 (±1.9)4.6 (±1.8)<0.001
 3–5 hours6.6 (±1.8)3.7 (±2.2)<0.001
 5–10 hours6.1 (±1.9)3.8 (±1.8)<0.001
Satisfaction rates (%)
 <1 hour
  Not satisfied04 (11.5%)<0.001
  Somewhat satisfied1 (2.9%)18 (51.4%)
  Very satisfied34 (97.1%)13 (37.1%)
 1–3 hours
  Not satisfied1 (2.9%)4 (11.4%)<0.001
  Somewhat satisfied4 (11.4%)22 (62.9%)
  Very satisfied30 (85.7%)9 (25.7%)
 3–5 hours
  Not satisfied08 (22.8%)<0.001
  Somewhat satisfied7 (20%)22 (62.9%)
  Very satisfied28 (80%)5 (14.3%)
 5–10 hours
  Not satisfied011 (31.4%)<0.001
  Somewhat satisfied11 (31.4%)21 (60%)
  Very satisfied24 (68.6%)3 (8.6%)
Number of patients needing rescue analgesia
 <1 hour04 (11.4%)0.114
 1–3 hours3 (8.6%)9 (25.7%)0.053
 3–5 hours3 (8.6%)10 (28.6%)0.031
 5–10 hours5 (14.3%)16 (45.7%)0.004
  • ESPB, erector-spinae plane block; NRS, numerical rating scale.