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John Alexander Lata Guacho,Diogo Turiani Hourneaux De Moura,Igor Braga Ribeiro,Bruna Furia Buzetti Hourneaux de Moura,Megui Marilia Mansilla Gallegos,Thomas McCarty,Ricardo Katsuya Toma,Eduardo Guimar 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.2
Background/Aims: Carbon dioxide is increasingly used in insufflation during colonoscopy in adult patients; however, air insufflationremains the primary practice among pediatric gastroenterologists. This systematic review and meta-analysis aims to evaluateinsufflation using CO2 versus air in colonoscopies in pediatric patients. Methods: Individualized search strategies were performed using MEDLINE, Cochrane Library, EMBASE, and LILACS databasesfollowing Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines and Cochrane workingmethodology. Randomized control trials (RCTs) were selected for the present meta-analysis. Pooled proportions were calculated foroutcomes including procedure time and abdominal pain immediately and 24 hours post-procedure. Results: The initial search yielded 644 records, of which five RCTs with a total of 358 patients (CO2: n=178 versus air: n=180) wereincluded in the final analysis. The procedure time was not different between the CO2 and air insufflation groups (mean difference,10.84; 95% confidence interval [CI], -2.55 to 24.22; p=0.11). Abdominal pain immediately post-procedure was significantly lowerin the CO2 group (risk difference [RD], -0.15; 95% CI; -0.26 to -0.03; p=0.01) while abdominal pain at 24 hours post-procedure wassimilar (RD, -0.05; 95% CI; -0.11 to 0.01; p=0.11). Conclusions: Based on this systematic review and meta-analysis of RCT data, CO2 insufflation reduced abdominal pain immediatelyfollowing the procedure, while pain was similar at 24 hours post-procedure. These results suggest that CO2 is a preferred insufflationtechnique when performing colonoscopy in pediatric patients.