Intravascular ultrasound predictors of subacute vessel closure after balloon angioplasty or atherectomy |
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Authors: | Cheneau Edouard Mintz Gary S Leborgne Laurent Kotani Jun-ichi Satler Lowell F Ajani Andrew E Weissman Neil J Waksman Ron Pichard Augusto D |
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Institution: | Cardiac Catheterization Laboratory, Washington Hospital Center, 110 Irving Street, N.W., Suite 4B-1, Washington, D.C. 20010-2975, USA. edouard.cheneau@libertysurf.fr. |
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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. METHODS AND 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. |
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