Erector spinae plane block vs transversus abdominis plane block for visceral and somatic pain after laparoscopic appendectomy

Table 2 Comparison of postoperative visceral pain Visual Analog Scale scores between groups at different time points (scores), mean ± SD

Time point	State	ESPB group (n = 91)	TAPB group (n = 92)	t value	P value
2 hours postoperatively	Rest	2.1 ± 0.8	3.2 ± 0.9	-8.741	< 0.001
	Activity	2.8 ± 0.9	4.0 ± 1.0	-8.648	< 0.001
6 hours postoperatively	Rest	2.3 ± 0.7	3.1 ± 0.8	-7.275	< 0.001
	Activity	3.0 ± 0.8	3.9 ± 0.9	-7.243	< 0.001
12 hours postoperatively	Rest	1.9 ± 0.6	2.4 ± 0.7	-5.237	< 0.001
	Activity	2.5 ± 0.7	3.1 ± 0.8	-5.479	< 0.001
24 hours postoperatively	Rest	1.4 ± 0.5	1.5 ± 0.6	-1.242	0.216
	Activity	1.9 ± 0.6	2.0 ± 0.7	-1.055	0.293
48 hours postoperatively	Rest	0.8 ± 0.4	0.9 ± 0.5	-1.517	0.131
	Activity	1.2 ± 0.5	1.3 ± 0.5	-1.38	0.169

Repeated measures ANOVA for rest state: Time effect F (2.87, 519.57) = 254.38, P < 0.001; group effect F (1, 181) = 52.16, P < 0.001; interaction effect F (2.87, 519.57) = 16.82, P < 0.001 (Greenhouse-Geisser corrected); repeated measures ANOVA for activity state: Time effect F (2.92, 528.52) = 278.65, P < 0.001; group effect F (1, 181) = 48.73, P < 0.001; interaction effect F (2.92, 528.52) = 15.94, P < 0.001 (Greenhouse-Geisser corrected).

ESPB: Erector spinae plane block; TAPB: Transversus abdominis plane block.