Long-term efficacy and safety of double balloon enteroscopy – prospective and retrospective data from a single center study

Double balloon enteroscopy (DBE) has evolved as one of the most innovative and fast spreading endoscopic procedures in the last decade. With increasing experience of performing endoscopic procedures in the mid gut outside the operating room it is necessary to investigate the effectiveness of DBE regarding therapeutic consequences, long-term efficacy as well as safety.To address this we retrospectively analyzed all DBE performed over a period of 2 years at our department. Furthermore, in order to evaluate long-term effectiveness of DBE procedures we performed a follow-up analysis on all patients, whose DBE procedure was at least 6 months ago. In addition, 100 consecutive patients who underwent DBE were questioned regarding procedure associated complaints using a standardized questionnaire.Retrospective analysis of all DBE procedures performed in our department before November 2006 (n = 545) revealed an overall diagnostic yield of 39.7% and a therapeutic yield of 31.1%. The overall number of major complications accounted to 0.9%. Follow-up analysis revealed a long-term effect of endoscopic interventions in more than 50%, while in those patients with an initially negative DBE long-term follow-up only revealed symptom explaining findings in 17% with the majority of the other patients being asymptomatic during follow-up. Regarding patient related complaints the prospective analysis showed that DBE procedures in general are well tolerated with the most common complaint being meteorism.DBE showed to be a relatively safe and well tolerated procedure. However, more sensitive algorithms are needed to enhance the therapeutic results.