title: Comparison of microcoils and polyvinyl alcohol particles in selective microcatheter angioembolization of non variceal acute gastrointestinal hemorrhage.
abstract: OBJECTIVE
  To compare the efficacy of polyvinyl alcohol (PVA) particles with microcoils in angiembolisation of non variceal acute gastrointestinal haemorrhage.
  
  
  METHODS
  This is a retrospective cross-sectional study of patients who underwent transcatheter angioembolization from January, 1995 to December, 2013 at Aga Khan University Hospital, Karachi. Patients were divided into two groups on basis of use of either microcoils or PVA particles and compared in terms of technical success, clinical success, re-bleeding and ischemic complication rates. Chi (χ(2)) square and Fisher's exact tests were applied and a P-value of less than 0.05 was considered statistically significant.
  
  
  RESULTS
  Fifty seven patients underwent angioembolization. Microcoil and PVA particles embolization was performed in 63% (36/57) and 35% (20/57) cases respectively. Technical success was achieved in all cases (100%). Clinical success rate was higher in microcoils group (92%) than PVA particles group (75%) with statistically significant P value (p=0.048). Ischemic complication was seen in one case (3%) in the microcoil group, while no such complications were seen in the PVA particles group.
  
  
  CONCLUSIONS
  In angioembolization of non variceal acute gastrointestinal haemorrhage microcoils are better than Polyvinyl alcohol particles with higher clinical success and lower re-bleed rates.
authors.affiliation: Dr. Tanveer-Ul-Haq, FRCR, Department of Radiology, Aga Khan University Hospital, Stadium Road, 74800 Karachi, Pakistan.
authors.lastname: Tanveer-Ul-Haq
authors.affiliation: Dr. Muhammad Idris, FCPS, Department of Radiology, Aga Khan University Hospital, Stadium Road, 74800 Karachi, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Idris
authors.affiliation: Dr. Basit Salam, FCPS, Department of Radiology, Aga Khan University Hospital, Stadium Road, 74800 Karachi, Pakistan.
authors.forename: Basit
authors.initials: B
authors.lastname: Salam
authors.affiliation: Dr. Waseem Akhtar, FCPS, Department of Radiology, Aga Khan University Hospital, Stadium Road, 74800 Karachi, Pakistan.
authors.forename: Waseem
authors.initials: W
authors.lastname: Akhtar
authors.affiliation: Dr. Yasir Jamil, FCPS, Department of Radiology, Aga Khan University Hospital, Stadium Road, 74800 Karachi, Pakistan.
authors.forename: Yasir
authors.initials: Y
authors.lastname: Jamil
keywords: Angio-embolization; Comparison; Gastrointestinal haemorrhage. Microcoils; Polyvinyl alcohol particles