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  • Title: Prospective, cross-over, single-center trial comparing oral double-balloon enteroscopy and oral spiral enteroscopy in patients with suspected small-bowel vascular malformations.
    Author: May A, Manner H, Aschmoneit I, Ell C.
    Journal: Endoscopy; 2011 Jun; 43(6):477-83. PubMed ID: 21437852.
    Abstract:
    BACKGROUND AND STUDY AIMS: Spiral enteroscopy is a new, promising rapid enteroscopy technique. A prospective cross-over study was carried out to compare this new method with the established technique of double-balloon enteroscopy (DBE). PATIENTS AND METHODS: From an initial group of 18 patients with suspected mid-gastrointestinal bleeding due to vascular malformations but no previous history of small-bowel or colonic surgery, 10 patients (mean age 69 years) completed the study. Patients underwent both enteroscopy techniques with an oral approach, in a randomized sequence. The deepest point reached during advancement in the first enteroscopy was marked with India ink. The primary end point of the study was the total examination time. RESULTS: For spiral enteroscopy, the mean examination time was significantly shorter than with DBE (43 minutes vs. 65 minutes; P = 0.007), as was the mean time required for advancement of the enteroscope to the deepest point (24 minutes vs. 43 minutes; P = 0.03). However, the median maximum insertion depth was greater in the DBE group than in the spiral enteroscopy group (310 cm vs. 250 cm; P = 0.004). In all cases in which DBE followed spiral enteroscopy, DBE passed the India ink mark by a mean of over 100 cm. When DBE was performed first, spiral enteroscopy was either unable to reach the mark or else unable to advance deeper into the small bowel. No severe complications occurred. CONCLUSIONS: The results confirm that the new spiral enteroscopy technique reduces the examination time, although the insertion depth with DBE is at present superior.
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