title: Multicenter survey on the use of device-assisted enteroscopy in Portugal.
abstract: BACKGROUND
  Device-assisted enteroscopies (DAEs) are recent endoscopic techniques that enable direct endoscopic small-bowel evaluation.
  
  
  OBJECTIVE
  The objective of this article is to evaluate the implementation of DAEs in Portugal and assess the main indications, diagnoses, diagnostic yield, therapeutic yield and complication rate.
  
  
  METHODS
  We conducted a multicenter retrospective series using a national Web-based survey on behalf of the Portuguese Small-Bowel Study Group. Participants were asked to fill out two online databases regarding procedural data, indications, diagnoses, endoscopic therapy and complications using prospectively collected institutional data records.
  
  
  RESULTS
  A total of eight centers were enrolled in the survey, corresponding to 1411 DAEs. The most frequent indications were obscure gastrointestinal bleeding (OGIB), inflammatory bowel disease and small-bowel tumors. The pooled diagnostic yield was 63%. A relation between the diagnostic yield and the indications was clear, with a diagnostic yield for OGIB of 69% (p = 0.02) with a 52% therapeutic yield. Complications occurred in 1.2%, with a major complication rate of 0.57%. Perforations occurred in four patients (0.28%).
  
  
  CONCLUSIONS
  DAEs are safe and effective procedures, with complication rates of 1.2%, the most serious of which is perforation. Most procedures are performed in the setting of OGIB. Diagnostic and therapeutic yields are dependent on the indication, hence appropriate patient selection is crucial.
authors.affiliation: ManopH, Instituto CUF, Portugal; Serviço de Gastrenterologia, Centro Hospitalar de Gaia/Espinho, Portugal.
authors.forename: Rolando
authors.initials: R
authors.lastname: Pinho
authors.affiliation: ManopH, Instituto CUF, Portugal.
authors.forename: Miguel
authors.initials: M
authors.lastname: Mascarenhas-Saraiva
authors.affiliation: Serviço de Gastrenterologia, Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Portugal.
authors.forename: Susana
authors.initials: S
authors.lastname: Mão-de-Ferro
authors.affiliation: Serviço de Gastrenterologia, Instituto Português de Oncologia de Lisboa Francisco Gentil, EPE, Portugal.
authors.forename: Sara
authors.initials: S
authors.lastname: Ferreira
authors.affiliation: Faculdade de Medicina da Universidade de Coimbra, Portugal; Serviço de Gastrenterologia, Centro Hospitalar e Universitário de Coimbra, Portugal.
authors.forename: Nuno
authors.initials: N
authors.lastname: Almeida
authors.affiliation: Faculdade de Medicina da Universidade de Coimbra, Portugal; Serviço de Gastrenterologia, Centro Hospitalar e Universitário de Coimbra, Portugal.
authors.forename: Pedro
authors.initials: P
authors.lastname: Figueiredo
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar de Gaia/Espinho, Portugal.
authors.forename: Adélia
authors.initials: A
authors.lastname: Rodrigues
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar de São João, Portugal.
authors.forename: Hélder
authors.initials: H
authors.lastname: Cardoso
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar de São João, Portugal.
authors.forename: Margarida
authors.initials: M
authors.lastname: Marques
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar do Alto Ave, Portugal.
authors.forename: Bruno
authors.initials: B
authors.lastname: Rosa
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar do Alto Ave, Portugal; Instituto de Ciências da Vida e Saúde (ICVS), Escola de Ciências da Saúde, Universidade do Minho, Portugal; ICVS/3B's, Laboratório Associado, Braga/Guimarães, Portugal.
authors.forename: José
authors.initials: J
authors.lastname: Cotter
authors.affiliation: Serviço de Gastrenterologia, Hospital Pedro Hispano, Portugal.
authors.forename: Germano
authors.initials: G
authors.lastname: Vilas-Boas
authors.affiliation: Serviço de Gastrenterologia, Hospital Pedro Hispano, Portugal.
authors.forename: Carla
authors.initials: C
authors.lastname: Cardoso
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar do Porto, Portugal.
authors.forename: Marta
authors.initials: M
authors.lastname: Salgado
authors.affiliation: Serviço de Gastrenterologia, Centro Hospitalar do Porto, Portugal.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Marcos-Pinto
keywords: Enteroscopy; complications; diagnosis; double-balloon enteroscopy; single-balloon enteroscopy; small-bowel; spiral enteroscopy; survey; therapy