Effect of local wound infiltration with ropivacaine on postoperative pain relief and stress response reduction after open hepatectomy

Table 3 Plasma concentrations of epinephrine, norepinephrine and cortisol (pg/mL)

Stress hormone	0 h	24 h	48 h
Epinephrine
Ropivacaine group	64.19 ± 19.62	86.54 ± 28.64	94.27 ± 30.10
Control group	66.19 ± 20.30	110.26 ± 31.88	118.59 ± 33.65
t	-0.36	-2.85	-2.77
P value	0.7180	0.0064	0.0078
Norepinephrine
Ropivacaine group	251.31 ± 30.19	280.62 ± 34.22	310.12 ± 35.15
Control group	259.70 ± 31.72	361.00 ± 36.06	390.41 ± 37.73
t	-0.99	-8.32	-8.01
P value	0.3286	< 0.0001	< 0.0001
Cortisol
Ropivacaine group	342.00 ± 33.72	391.81 ± 36.53	450.62 ± 39.39
Control group	331.59 ± 31.92	487.48 ± 34.36	518.85 ± 38.21
t	1.15	-9.82	-6.40
P value	0.2537	< 0.0001	< 0.0001