Effect of microenvironment theory-based nursing on prognosis in intensive care unit patients with postoperative severe acute pancreatitis

Table 1 Baseline characteristics, mean ± SD

Group	Age (years)	Sex (male/female)	Body mass index (kg/m²)	Etiology (biliary/hyperlipidemic/alcoholic/other)
Observed group (n = 53)	55.42 ± 7.15	35/18	23.33 ± 3.11	21/12/11/9
Control group (n = 53)	54.83 ± 6.29	28/25	22.52 ± 2.97	25/13/10/5
t/χ²	0.447	1.917	1.372	1.578
P value	0.656	0.166	0.173	0.664

Table 2 Comparison of postoperative recovery outcomes, mean ± SD

Group	Time to first flatus (hours)	Time to first defecation (hours)	Length of hospital stay (days)
Observed group (n = 53)	52.49 ± 6.33	65.13 ± 7.88	23.53 ± 3.32
Control group (n = 53)	58.11 ± 6.74	73.53 ± 8.79	25.64 ± 4.16
t value	4.428	5.178	2.890
P value	0.000	0.000	0.005

Table 3 Comparison of post-intervention psychological distress scores, mean ± SD

Group	Hamilton Depression Rating Scale		Hamilton Anxiety Rating Scale
	Before	After	Before	After
Observed group (n = 53)	23.08 ± 4.24	13.13 ± 3.05a	21.13 ± 4.09	12.42 ± 2.82a
Control group (n = 53)	22.34 ± 4.47	17.28 ± 3.16a	20.23 ± 3.85	15.17 ± 3.05a
t value	0.870	6.874	1.174	4.830
P value	0.387	0.000	0.243	0.000

^aP < 0.05 vs before intervention.

Table 4 Comparison of acute physiology and chronic health scores, mean ± SD

Group	Before	After	t value	P value
Observed group (n = 53)	17.55 ± 3.57	8.79 ± 2.95	13.495	0.000
Control group (n = 53)	18.26 ± 3.76	10.36 ± 3.27	12.110	0.000
t value	1.007	2.588
P value	0.316	0.011

Table 5 Comparison of postoperative complication rates, n (%)

Group	Pulmonary infection	Intra-abdominal infection	Catheter-related infection	Respiratory failure	Acute renal failure	Total
Observed group (n = 53)	1 (1.89)	0 (0.00)	1 (1.89)	1 (1.89)	0 (0.00)	3 (5.66)
Control group (n = 53)	2 (3.77)	3 (5.66)	2 (3.77)	2 (3.77)	1 (1.89)	10 (18.87)
χ² value						4.296
P value						0.038