Effect of ultrasound-guided lumbar square muscle block on stress response in patients undergoing radical gastric cancer surgery

Table 1 Comparison of plasma inflammatory factor levels before and after treatment between the observation and control groups (X ± s)

		Pro-adrenaline (pg/L)	Cortisol (ng/L)	IL-6 (ng/L)	C-reactive protein (mg/L)
Control group (n = 50)	Before treatment	1.16 ± 0.12	24.55 ± 2.54	36.47 ± 1.64	34.22 ± 1.64
	After treatment	0.88 ± 0.18	21.66 ± 2.16	30.08 ± 1.72	27.84 ± 1.19
Observation group (n = 50)	Before treatment	1.15 ± 0.19	24.51 ± 2.08	36.39 ± 1.66	34.35 ± 1.91
	After treatment	0.51 ± 0.09	17.08 ± 1.52	22.51 ± 1.58	16.78 ± 1.49
t/P		8.682/< 0.001	5.814/< 0.001	18.037/< 0.001	21.122/< 0.001
t/P		20.421/< 0.001	19.347/< 0.001	40.629/< 0.001	48.655/< 0.001
t/P post-treatment inter-group values		12.333/< 0.001	11.632/< 0.001	21.743/< 0.001	38.908/< 0.001

Values are expressed as mean ± SD.