Impact of thoracic paravertebral block and sufentanil on outcomes and postoperative cognitive dysfunction in thoracoscopic lung cancer surgery

Table 4 Visual analog scale score changes

Grouping	2 h after surgery	12 h after surgery	24 h after surgery
TPVB group (n = 57)	3.53 ± 0.6	2.68 ± 0.47a	2.18 ± 0.38a,b
Control group (n = 50)	3.42 ± 0.54	2.98 ± 0.14a	2.5 ± 0.54a,b
t value	1.064	3.318	3.632
P value	0.934	0.015	0.005

^aP < 0.05 compared with the preoperative level.

^bP < 0.05 compared with the value at 12 h after surgery.

TPVB: Thoracic paravertebral block.