Safety and efficacy of carbon dioxide insufflation during gastric endoscopic submucosal dissection

Table 4 Complications from endoscopic submucosal dissection, blood parameters, and duration of hospital stay

Variable	CO2 group (n = 36)	Air group (n = 51)	P value
Fever (body temperature > 37.5  °C)	9 (25.0)	9 (17.6)	NS
Pneumonia	3 (8.3)	5 (9.8)	NS
Perforation	1 (2.7)	1 (1.9)	NS
Post-procedure hemorrhage	0	4 (7.8)	NS
Mallory-Weiss tears	0	8 (9.8)	0.013
CRP on day 1 after ESD, mg/dL	0.30 (0.09-6.19)	0.40 (0.04-3.62)	NS
CRP on day 3 after ESD, mg/dL	2.00 (0.18-7.83)	2.00 (0.08-14.20)	NS
WBC on day 1 after ESD, n/μL	9020 (3730-15680)	8090 (4510-13450)	NS
WBC on day 3 after ESD, n/μL	6310 (2560-11200)	6260 (3100-10660)	NS
Hospital stay, d	7 (7-16)	7 (7-20)	NS

Data are presented as n (%) or median (range). ESD: Endoscopic submucosal dissection; CRP: C-reactive protein; WBC: White blood cell.