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Evaluation of abdominal circumference and salivary amylase activities after unsedated colonoscopy using carbon dioxide and air insufflations
Author(s) -
Kiriyama Shinsuke,
Naitoh Hiroshi,
Fukuchi Minoru,
Yuasa Kazuhisa,
Horiuchi Katsuhiko,
Fukasawa Takaharu,
Tabe Yuichi,
Yamauchi Hayato,
Suzuki Masaki,
Yoshida Tomonori,
Saito Yutaka,
Kuwano Hiroyuki
Publication year - 2015
Publication title -
journal of digestive diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 51
eISSN - 1751-2980
pISSN - 1751-2972
DOI - 10.1111/1751-2980.12302
Subject(s) - colonoscopy , insufflation , medicine , anesthesia , abdomen , surgery , colorectal cancer , cancer
Objective To assess and compare abdominal distention and stress in unsedated colonoscopy using carbon dioxide (CO 2 ) and air insufflations. Methods Two hundred and five patients underwent colonoscopic examinations without sedation using either CO 2 or air insufflation. Abdominal circumference and salivary amylase (sAMY) activities before and 0 and 15 min after colonoscopy were measured by a nurse who was blinded to the grouping of the patients. Results In all, 102 and 103 patients were randomly recruited in the CO 2 and air insufflation groups, respectively. sAMY activities before and 0 and 15 min after colonoscopy were not significantly different between the two groups. Abdominal circumference measured immediately and 15 min after colonoscopy was significantly smaller in CO 2 insufflation group than in the air insufflation group (81.2 cm vs 84.0 cm, and 79.7 cm vs 83.6 cm, respectively; P <0.05). The increasing ratio of abdominal circumference immediately after colonoscopy was not significantly different between the two groups; however, the ratio at 15 min after colonoscopy using CO 2 insufflation was significantly lower than that in the air insufflation group (1.007 vs 1.028, P <0.001). Conclusion sAMY activities after unsedated colonoscopy using CO 2 insufflation were not improved; however, CO 2 insufflation decreases abdominal circumference after colonoscopy compared with air insufflation.