Analysis the effectiveness nursing interventions for contrast-induced adverse reactions in postoperative general surgery patients undergoing contrast-enhanced computed tomography scans

Table 1 Comparison of changes in early renal injury markers between two patient groups (mean ± SD)

Group	Patients	NGAL (ng/mL)		CysC (mg/L)
		Before	After	Before	After
Control	40	47.15 ± 9.21	79.46 ± 16.80	0.88 ± 0.12	1.07 ± 0.16
Observation	40	46.27 ± 8.51	58.32 ± 12.61	0.89 ± 0.14	0.99 ± 0.13
t		0.444	6.365	0.343	2.454
P value		0.658	0.000	0.733	0.016

NGAL: Neutrophil gelatinase-associated lipocalin; CysC: Cystatin C.

Table 2 Comparison of heart rate variability time-domain parameters between the two patient groups (mean ± SD, millisecond)

Group	Patients	SDNN		RMSSD
		Before	After	Before	After
Control	40	62.85 ± 12.31	54.20 ± 13.72	38.16 ± 9.62	31.46 ± 9.21
Observation	40	63.26 ± 11.54	68.52 ± 10.36	38.76 ± 9.16	42.65 ± 8.92
t		0.154	5.268	0.286	5.520
P value		0.878	0.000	0.776	0.000

SDNN: SD of normal R-R intervals; RMSSD: Root mean square of successive R-R interval differences.

Table 3 Comparison of systemic inflammatory response indicators between the two patient groups (mean ± SD, pg/mL)

Group	Patients	IL-6		TNF-α
		Before	After	Before	After
Control	40	3.21 ± 0.85	13.62 ± 3.51	4.21 ± 1.10	9.86 ± 2.31
Observation	40	3.30 ± 0.93	8.77 ± 2.18	4.12 ± 1.05	7.32 ± 1.67
t		0.452	7.424	0.374	5.636
P value		0.653	0.000	0.709	0.000

IL-6: Interleukin-6; TNF-α: Tumor necrosis factor-α.

Table 4 Comparison of changes in patient-reported outcomes scores before and after examination in the two patient groups (mean ± SD, score)

Group	Patients	Emotional function		Overall health		Discomfort
		Before	After	Before	After	Before	After
Control	40	66.52 ± 10.15	71.82 ± 11.26	67.97 ± 10.50	72.89 ± 9.38	21.35 ± 6.58	45.64 ± 8.75
Observation	40	65.26 ± 9.59	82.48 ± 10.35	68.53 ± 9.72	88.75 ± 8.27	22.15 ± 7.24	30.53 ± 8.32
t		0.571	4.408	0.248	8.021	0.517	7.915
P value		0.570	0.000	0.805	0.000	0.607	0.000

Table 5 Comparison of procedure-related complication rates between the two patient groups, n (%)

Group	Contrast medium extravasation	Mild adverse reactions	Moderate to severe adverse reactions	Overall incidence rate
Control	9 (22.50)	8 (20.00)	6 (15.00)	14 (35.00)
Observation	2 (5.00)	5 (12.50)	1 (2.50)	6 (15.00)
χ²	-			4.267
P value	0.048			0.039