4Bowling T E, Hadjiminas C L, Poison R J, et al. Effects of supple- mental oxygen on cardiac rhythm during upper gastrointestinal endoscopy:a randomised controlled double blind trial[J].Gut, 1993, 34: t 492-1497.
1Yagi J , Adaehi K , Arima N , et al. A prospective randomized comparative study on the safety and tolerability of transnasal esophagogastroduodenoscopy. Endoscopy, 2005, 37 : 1226-1231.
2Qureshi WA, Zuckerman MJ, Adler DG, et al. ASGE guideline: modifications in endoscopic practice for the elderly. Gastrointest Endosc ,2006,63 : 566-569.
3Clarke GA, Jacobson BC, Hammett RJ. The indications, utilization and safety of gastrointestinal endoscopy in an extremely elderly patient cohort. Endoscopy, 2001,33: 580-584.
4Arora A, Singh P. Colonoscopy in patients 80 years of age and older is safe, with high success rate and diagnostic yield. Gastrointest Endosc ,2004,60 : 408 -413.
5Seinela L, Pehkonen E, Laasanen T. Bowel preparation for colonoscopy in very old patients: a randomized prospective trial comparing oral sodium phosphate and polyethylene glycol electrolyte lavage solution. Scand J Gastroenterol, 2003,38 : 216-220.
6Beloosesky Y, Grinblat J, Weiss A, et al. Electrolyte disorders following oral sodium phosphate administration for bowel cleansing in elderly patients. Arch Intern Med,2003,163: 803-808.
7Niehaus M, Tebbenjohanns J. Electromagnetic interference in patients with implanted pacemakers or cardioverter-defibrillators. Heart,2001,86 : 246-248.
8Cohen LB, Hightower CD, Wood DA, et al. Moderate level sedation during endoscopy: a prospective study using low-dose propofol, meperidine/fentanyl, and midazolam. Gastrointest Endosc, 2004,59 : 795-803.
9Compo R;Montserrat E;Brullet E.Trasnasal gastroscopy compared to comentional gastroscopy:a randomized study of feasibility,1998.
