title: Intravascular ultrasound predictors of subacute vessel closure after balloon angioplasty or atherectomy.
abstract: BACKGROUND
  Factors leading to subacute vessel closure after percutaneous coronary intervention (PCI) have not been well established in lesions treated with balloon angioplasty or atherectomy.
  
  
  RESULTS
  We used intravascular ultrasound (IVUS) to determine the pre- and post-PCI characteristics involved in subacute vessel closure after PCI. Of 3,403 patients undergoing IVUS imaging during coronary balloon angioplasty or atherectomy, 8 patients (0.2%) developed angiographically documented subacute vessel closure within 1 week post-PCI and were compared to a group matched by procedure date (within 6 months), age, gender, stable or unstable angina, lesion location and treatment (balloon angioplasty or atherectomy). IVUS identified at least one cause for subacute vessel closure in 87% of patients (vs 25% in matched lesions, p < 0.01). Causes were all procedure-related and included inadequate final lumen (60%), dissection (50%) and thrombus (25%). Pre-procedure lesion characteristics were not different from matched lesions.
  
  
  CONCLUSIONS
  Subacute vessel closure after balloon angioplasty or atherectomy is mostly related to insufficient post-procedure lumen dimension or dissection.
authors.affiliation: Cardiac Catheterization Laboratory, Washington Hospital Center, 110 Irving Street, N.W., Suite 4B-1, Washington, D.C. 20010-2975, USA. edouard.cheneau@libertysurf.fr.
authors.forename: Edouard
authors.initials: E
authors.lastname: Cheneau
authors.forename: Gary S
authors.initials: GS
authors.lastname: Mintz
authors.forename: Laurent
authors.initials: L
authors.lastname: Leborgne
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Kotani
authors.forename: Lowell F
authors.initials: LF
authors.lastname: Satler
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Ajani
authors.forename: Neil J
authors.initials: NJ
authors.lastname: Weissman
authors.forename: Ron
authors.initials: R
authors.lastname: Waksman
authors.forename: Augusto D
authors.initials: AD
authors.lastname: Pichard
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects*; D017225:Atherectomy, Coronary / Q000009:adverse effects*; D023903:Coronary Restenosis / Q000000981:diagnostic imaging* / Q000209:etiology; D023921:Coronary Stenosis / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D018084:Ultrasonography, Interventional / Q000379:methods*