Original ArticleA prospective study of factors that determine cecal intubation time at colonoscopy
Section snippets
Patients and methods
A prospective study was performed of consecutive outpatients undergoing elective outpatient colonoscopy at a university-affiliated tertiary care medical center from January to October 2002. The indication for most of the procedures was colorectal cancer/polyp screening or surveillance for polyps. All colonoscopies were performed by using standard videocolonoscopes. The study was approved by the institutional review board of our medical center, and patients provided written informed consent
Results
Thirteen patients (1.8%) refused to participate. Partial data were available for 693 colonoscopies; complete data for 587 colonoscopies were available for regression analyses. Summary data for these patients are shown in Table 1. Mean patient age was 69 years (range 23-91 years); 48% of the patients were men and 52% were women. Mean BMI was 27.8 (range 15.1-69.1), 51% had no history of surgery, 27% had undergone operations with a low risk of adhesions, and 22% had undergone operations with a
Discussion
In this study of outpatients undergoing colonoscopy at a tertiary care referral center, the time required for cecal intubation was most strongly associated with the quality of bowel preparation. Previous studies have found that colonoscopy is significantly more difficult in women than in men.4, 5, 6 It also has been demonstrated that colonoscopy completion rate is lower in women, in patients younger than 20 years of age, in patients older than 80 years, and in patients who have undergone
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See CME Section; p. 127.
Grant support for this study was provided by the American Society for Gastrointestinal Endoscopy.
Presented in abstract form at Digestive Diseases Week American Society for Gastrointestinal Endoscopy meeting, May 18-21, 2003, Orlando, Florida (Gastroenterology 2003;124(4 Suppl 1).