title: Subintimal angioplasty in the treatment of patients with intermittent claudication: long term results.
abstract: OBJECTIVE
  Reporting the long-term results of subintimal angioplasty (SA) in patients with intermittent claudication (IC).
  
  
  METHODS
  A prospective study.
  
  
  METHODS
  One hundred and sixteen SA procedures were performed in 104 patients, from February 1997 to January 2000.
  
  
  METHODS
  This is a prospective study of patients treated for IC with infrainguinal SA. Primary assisted patency rates were calculated, also on intention to treat basis. Univariate and multivariate Cox regression tests were used to assess whether patency was correlated with co-morbidities, run-off or occlusion length.
  
  
  RESULTS
  There was no early mortality. Technical success was achieved in 101 cases (87%). Primary assisted patency rates on intention to treat basis (116 cases) at 6, 12, 36 and 60 months were 69, 62, 57 and 54%, respectively. For successfully recanalized patients (101 cases) these respective numbers are 79, 70, 66 and 64%. Length of occlusion, age and male gender were independent risk factors for reocclusion.
  
  
  CONCLUSIONS
  The satisfactory results obtained in the present study are probably due to two main factors. First, the three participating radiologist are highly skilled and experienced. Secondly, a conscientious surveillance was adhered to, so that restenoses could be diagnosed and treated early. SA is a relevant alternative to bypass surgery in patients with disabling IC due to long femoro-popliteal occlusions. It is far less traumatic than conventional vascular reconstructions, complications are few and not serious. Very importantly, SA never interfered with later successful vascular surgery. Therefore, we have adopted SA as the primary treatment for patients with IC when medical treatment alone has not been satisfactory.
authors.affiliation: Oslo Centre for Vascular Surgery and the Departments of Radiology and Circulation Physiology, Aker University Hospital, Oslo 0514, Norway. tor.florenes@iok.uio.no
authors.forename: T
authors.initials: T
authors.lastname: Flørenes
authors.forename: D
authors.initials: D
authors.lastname: Bay
authors.forename: G
authors.initials: G
authors.lastname: Sandbaek
authors.forename: T
authors.initials: T
authors.lastname: Saetre
authors.forename: J J
authors.initials: JJ
authors.lastname: Jørgensen
authors.forename: C E
authors.initials: CE
authors.lastname: Slagsvold
authors.forename: A J
authors.initials: AJ
authors.lastname: Kroese
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017130:Angioplasty / Q000379:methods*; D003097:Collateral Circulation; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D007383:Intermittent Claudication / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000601:surgery; D011446:Prospective Studies; D015641:Radiography, Interventional; D012307:Risk Factors; D016896:Treatment Outcome; D014654:Vascular Patency