| Interventions |
All procedures are performed by endoscopists experienced with the balloon assisted enteroscopy technique. Sedation is given according to current standards. Oral enteroscopy is always performed first, supplemented by enteroscopy via the anal route, if indicated. Enteroscopy is performed using the single balloon endoscope system with a prototype of NBI system (SIF-Q180, Olympus Optical Co., Ltd., Tokyo, Japan). The endoscope consists of a 200-cm long video endoscope with an outer diameter of 9.2 mm and a flexible overtube with a length of 140 cm and an outer diameter of 13.2 mm. One single balloon is attached to the tip of the overtube. The insertion process consists of introduction of the tip of the enteroscope, following by positioning the overtube to the tip of the enteroscope. The balloon on the tip of the overtube is inflated, the tip of the enteroscope is angulated, and both are pulled back. Repeating this step, in theory, the whole small bowel can be visualized6 Narrow band imagin (NBI) technique The filter of light source for NBI was composed of two bands: a light with a wavelength for the blue band and the other for the green band. Using the single balloon enteroscopy system, both the conventional white light and NBI view can be switched alternatively by pushing a preset button on the head of the enteroscope. |