Effects of endoscopic mucosal resection and argon plasma coagulation on postoperative recovery and complications in elderly colon polyp patients

Table 1 Comparison of general data between the two groups, mean ± SD/n (%)

Variables	Total (n = 224)	EMR (n = 124)	APC (n = 100)	Statistic	P value
Age (years)	55.51 ± 2.96	55.35 ± 2.94	55.72 ± 2.97	t = -0.94	0.349
Gender				χ2 = 0.52	0.471
Female	86 (38.39)	45 (36.29)	41 (41.00)
Male	138 (61.61)	79 (63.71)	59 (59.00)
Polyp diameter (cm)	1.23 ± 0.18	1.22 ± 0.19	1.25 ± 0.17	t = -1.24	0.216
Polyp number				χ2 = 0.32	0.573
Single polyp	39 (17.41)	20 (16.13)	19 (19.00)
Multiple polyps	185 (82.59)	104 (83.87)	81 (81.00)
Polyp type				χ2 = 0.23	0.892
Mucosal elevation	167 (74.55)	94 (75.81)	73 (73.00)
Sessile polyp	38 (16.96)	20 (16.13)	18 (18.00)
Pedunculated polyp	19 (8.48)	10 (8.06)	9 (9.00)

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.

Table 2 Comparison of surgical treatment indices, mean ± SD/ n (%)

Variables	Total (n = 224)	EMR (n = 124)	APC (n = 100)	Statistic	P value
Operation time (min)	12.09 ± 3.34	13.27 ± 3.82	10.63 ± 1.76	t = 6.84	< 0.001
Intraoperative bleeding	104 (46.43)	65 (52.42)	39 (39.00)	χ2 = 4.63	0.031
Hospital stays (days)	2.87 ± 1.20	3.87 ± 0.40	1.63 ± 0.49	t = 37.78	< 0.001

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.

Table 3 Comparison of one-time resection rates, n (%)

Group	Number of polyps	One-time excision	Two or more resections
EMR	267	238 (89.14)	29 (10.86)
APC	226	214 (94.69)	12 (5.31)
χ2		4.95
P value		0.026

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.

Table 4 Comparison of treatment effects, n (%)

Group	Cases	Marked effect	Effective	Ineffective	Total effective
EMR	124	64 (51.61)	53 (42.74)	7 (5.65)	117 (94.35)
APC	100	47 (47.00)	45 (45.00)	8 (8.00)	92 (92.00)
χ2					0.49
P value					0.483

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.

Table 5 Comparison of inflammation levels before and after surgery, mean ± SD

Group	PCT (mg/L)			CRP (ng/mL)
	Before	After	P value	Before	After	P value
EMR	43.31 ± 4.77	68.85 ± 7.74	< 0.001	0.33 ± 0.12	0.83 ± 0.21	< 0.001
APC	44.51 ± 5.41	55.16 ± 6.39	< 0.001	0.35 ± 0.15	0.55 ± 0.17	< 0.001
P value	0.075	< 0.001		0.544	< 0.001

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation; PCT: Procalcitonin; CRP: C-reactive protein.

Table 6 Comparison of complications, n (%)

Group	Cases	Bleeding	Incision infection	Postoperative abdominal pain	Abdominal perforation	Total complications
EMR	124	4 (3.23)	3 (2.42)	2 (1.61)	0 (0.00)	9 (7.26)
APC	100	2 (2.00)	0 (0.00)	1 (1.00)	0 (0.00)	3 (3.00)
χ2						1.98
P value						0.159

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.

Table 7 Comparison of postoperative recurrence rates, n (%)

Group	Cases	6th month	12th month
EMR	124	2 (1.61)	10 (8.06)
APC	100	0 (0.00)	2 (2.00)
χ2			4.02
P value		0.504	0.045

EMR: Endoscopic mucosal resection; APC: Argon plasma coagulation.