Causes of epigastric pain and vomiting after laparoscopic-assisted radical right hemicolectomy - superior mesenteric artery syndrome

Table 1 Comparison of preoperative and postoperative angle and distance in the experimental groups

	Preoperative	Postoperative	t	P value
Angle (°)	23.50 ± 4.23	14.67 ± 3.08	12.562	0.000
Distance (mm)	9.33 ± 1.37	5.17 ± 1.72	6.934	0.001

Table 2 Comparison of risk factors between the two groups

Risk factor		Experimental group (n = 6)	Control group (n = 20)	t/χ2	P value
Angle (°)		23.50 ± 4.23	36.35 ± 8.13	3.686b	0.001
Distance (mm)		9.33 ± 1.37	14.45 ± 4.44	4.491b	0.000
BMI (kg/m2)		18.82 ± 3.13	22.85 ± 2.33	3.436b	0.002
Type of lymphadenectomy				0.000a	1.000
	D3	5	15
	D2	1	5
Surgical approach				1.219a	0.544
	Lateral approach group	2	5
	Intermediategroup	1	8
	Caudal approach group	3	7

^aχ² test.

^bt test.

BMI: Body mass index.

Table 3 Receiver operating characteristic results

Risk factor	AUC	SE	P value	95%CI	Cut off	Sensitivity	Specificity
Angle	0.913	0.056	0.003	0.803–1.000	29.50°	0.800	1.000
Distance	0.888	0.065	0.005	0.760–1.000	11.50 mm	0.750	1.000
BMI	0.867	0.123	0.007	0.625–1.000	18.45 kg/m2	1.000	0.833

AUC: Area under curve; SE: Standard error; BMI: Body mass index.