Effectiveness of early enteral nutrition support in patients undergoing gastrointestinal perforation repair surgery within the enhanced recovery

Table 4 Comparison of immune function, M (P25, P75)

	Control group (n = 32)	Observation group (n = 34)	Z value	P value
IgA (g/L)
Preoperative	0.97 (0.90, 1.00)	0.90 (0.81, 1.02)	1.348	0.178
Postoperative day 1	0.85 (0.78, 0.94)a	0.83 (0.74, 0.88)a	1.040	0.298
Postoperative day 5	0.91 (0.79, 0.95)a	1.94 (1.48, 2.28)a,b	6.418	< 0.001
IgM (g/L)
Preoperative	0.47 (0.39, 0.55)	0.47 (0.38, 0.52)	0.315	0.753
Postoperative day 1	0.40 (0.34, 0.48)a	0.39 (0.32, 0.45)a	0.289	0.773
Postoperative day 5	0.42 (0.35, 0.46)a	1.65 (1.34, 1.90)a,b	6.977	< 0.001
IgG (g/L)
Preoperative	7.67 (6.83, 8.70)	7.44 (6.53, 8.29)	0.879	0.379
Postoperative day 1	6.66 (6.09, 7.36)a	6.77 (6.45, 7.66)a	0.122	0.903
Postoperative day 5	7.21 (6.21, 7.54)a	10.20 (9.59, 10.86)a,b	6.680	< 0.001
CRP (mg/L)
Preoperative	49.66 (41.96, 54.75)	49.78 (45.42, 56.11)	0.584	0.559
Postoperative day 1	60.25 (53.33, 76.13)a	62.26 (51.17, 71.33)a	0.565	0.572
Postoperative day 5	19.74 (16.79, 21.48)a,b	17.16 (15.37, 17.96)a,b	2.791	0.005

^aP < 0.05 compared to preoperative values.

^bP < 0.05 compared to postoperative day 1.

CRP: C-reactive protein; IgA: Immunoglobulin A; IgG: Immunoglobulin G; IgM: Immunoglobulin M.