title: Capsule retentions and incomplete capsule endoscopy examinations: an analysis of 2300 examinations.
abstract: Aim. To evaluate capsule endoscopy in terms of incomplete examinations and capsule retentions and to find risk factors for these events. Material and Methods. This retrospective and consecutive study includes data from 2300 capsule enteroscopy examinations, performed at four different hospitals in Stockholm, Sweden from 2003 to 2009. Results. The frequency of incomplete examinations was 20%. Older age, male gender, suspected, and known Crohn's disease were risk factors for an incomplete examination. The PillCam capsule had the highest rate of completed examinations. Capsule retention occurred in 1.3% (n = 31). Risk factors for capsule retention were known Crohn's disease and suspected tumor. Complications of capsule retention were acute obstructive symptoms in six patients and one death related to complications after acute surgical capsule retrieval.
  
  
  CONCLUSIONS
  Capsule endoscopy is considered a safe procedure, although obstructive symptoms and serious complications due to capsule retention can be found in a large series of patients.
authors.affiliation: Department of Medicine, Karolinska Institute, Stockholm Söder Hospital, 118 83 Stockholm, Sweden.
authors.forename: Charlotte M
authors.initials: CM
authors.lastname: Höög
authors.forename: Lars-Åke
authors.initials: LÅ
authors.lastname: Bark
authors.forename: Juan
authors.initials: J
authors.lastname: Arkani
authors.forename: Jacob
authors.initials: J
authors.lastname: Gorsetman
authors.forename: Olle
authors.initials: O
authors.lastname: Broström
authors.forename: Urban
authors.initials: U
authors.lastname: Sjöqvist