This is the Scientific Surgery Archive, which contains all randomized clinical trials in surgery that have been identified by searching the top 50 English language medical journal issues since January 1998. Compiled by Jonothan J. Earnshaw, former Editor-in-Chief, BJS

A randomised trial to assess the safety and efficacy of carbon dioxide versus air insufflation in colonoscopy Gut 2002; 50: 604-7.

Published: 1st January 2002

Authors: Bretthauer M, Thiis, Evensen E, Huppertz, Hauss G, Gisselsson L et al.

Conclusion

Some 240 procedures were included. There were no differences in clinical outcomes, caecal intubation rate, post procedure pain scores or end tidal carbon dioxide levels.

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