The effect of ultrasound-guided bilateral single-shot erector spinae plane block on recovery after on-pump coronary bypass graft surgery: a randomized controlled study

Ain-Shams Journal of Anesthesiology

Table 3 The numerical rating score (NRS) after extubation in the two groups

NRS after extubation	Group A (n = 27)	Group B (n = 27)	p-value
Immediately after extubation	1 (1–2)	1 (1–2)	0.788
2 h	4 (1–5)	1 (1–2)	˂ 0.0001*
4 h	2 (1–4)	1 (1–3)	0.0006*
6 h	2 (1–3)	2 (1–4)	0.306
8 h	2 (1–4)	2 (1–4)	0.423
12 h	2 (1–3)	2 (1–3)	0.097
16 h	2 (1–4)	2 (1–4)	0.148
20 h	2 (1–4)	2 (1–3)	0.119
24 h	1 (0–3)	1 (0–2)	0.081

Group A (control group ), group B ( ESPB group). Data were presented as median and interquartile range
^*Denoted significant difference between groups (p ≤ 0.05)