Ain-Shams Journal of Anesthesiology

Table 4 Number of patients required rescue analgesia

From: 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

	Group A (n = 27)	Group B (n = 27)	p-value
Immediately	0 (0%)	0 (0%)	-
2 h	18 (66.67%)	0 (0%)	< 0.0001*
4 h	8 (29.63%)	0 (0%)	0.004*
6 h	7 (25.92%)	3 (11.11%)	0.050
8 h	5 (18.52%)	3 (11.11%)	0.704
12 h	3 (11.11%)	5 (18.52%)	0.704
16 h	6 (22.22%)	4 (14.81%)	0.727
20 h	4 (14.81%)	2 (7.41%)	0.668
24 h	0 (0%)	0 (0%)	-

Group A (control group), group B (ESPB group). Data were presented as N and %
^*Denoted significant difference between groups (p < 0.05)

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