title: Outcome after 7 years of carotid artery stenting and endarterectomy in Sweden - single centre and national results.
abstract: OBJECTIVE
  The aim was internal vascular centre quality-control measures to compare single-centre results with the national perspective, as well as analysing the Swedish results from carotid artery stenting (CAS) and comparing a relatively high-volume single centre with the Swedish Vascular Registry (Swedvasc) data. The second aim was to compare CAS and carotid artery endarterectomy (CEA) outcomes for the same 7-year period.
  
  
  METHODS
  Retrospective review of a single high-volume centre (Södersjukhuset (SÖS)) (approximately 30 CAS year(-1) approximately 90 CEA year(-1)) versus Swedvasc National data.
  
  
  METHODS
  All consecutive selective patients treated with CAS at SÖS for a stenosis of the internal carotid artery (n = 208) or CEA (n = 552) between 2004 and 2011 were compared with all patients in Swedvasc registered for CAS (n = 258) and CEA (n = 6474). Primary outcome was 30-day frequency of stroke or death. Secondary outcome was stroke/death/acute myocardial infarction (AMI).
  
  
  RESULTS
  The 30-day frequency of any stroke or death after CAS at SÖS compared to the national data was 2.9% and 7.4%, respectively (P = 0.04). The 30-day AMI/stroke/death frequency was 3.4% and 9.5%, respectively (P = 0.01). After CEA during the same time period, the Swedvasc national data had a 4.4% frequency of 30-day stroke and death and 5.8% for AMI/stroke/death.
  
  
  CONCLUSIONS
  CAS is not as safe as CEA from a national perspective but our results indicate that a single centre can achieve acceptable results with CAS.
authors.affiliation: Department of Vascular Surgery, Karolinska University Hospital, 17176 Stockholm, Sweden. David.lindstrom@ki.se
authors.forename: D
authors.initials: D
authors.lastname: Lindström
authors.forename: M
authors.initials: M
authors.lastname: Jonsson
authors.forename: J
authors.initials: J
authors.lastname: Formgren
authors.forename: M
authors.initials: M
authors.lastname: Delle
authors.forename: S
authors.initials: S
authors.lastname: Rosfors
authors.forename: P
authors.initials: P
authors.lastname: Gillgren
mesh_terms: D000368:Aged; D002343:Carotid Artery, Internal / Q000601:surgery*; D016893:Carotid Stenosis / Q000175:diagnosis / Q000628:therapy*; D016894:Endarterectomy, Carotid; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019919:Prosthesis Implantation; D011786:Quality Control; D012042:Registries; D012189:Retrospective Studies; D015607:Stents; D020521:Stroke; D013548:Sweden; D016896:Treatment Outcome