title: Angiographic follow-up of patients after transluminal coronary extraction atherectomy.
abstract: The transluminal coronary extraction-endarterectomy catheter (TEC) consists of a torquing tube with a distal, conical rotating blade. We successfully treated 26 patients (27 lesions) using this catheter with adjunctive balloon angioplasty. Twenty-five patients (26 lesions) had serial angiography before, 1 day after, and 3 months after the procedure. All 17 patients without restenosis 3 months after the procedure had angiography at 6 months. Restenosis, defined as > 50% diameter stenosis, was noted in nine lesions at 3 months (early restenosis) and in five lesions at 6 months (late restenosis). Between vessels with and without early restenosis, the percentage of diameter stenosis seen 1 day after the procedure and the luminal diameter were significantly different (38% +/- 14% vs 22% +/- 12%, respectively, p < 0.01; 2.3 vs 2.9 mm, p < 0.01, respectively). However, between vessels with and without late restenosis, these variables were not significantly different. The overall restenosis rate was 54% (native vessels 50%; grafts 80%). This observational study suggests that very early diameter narrowing seen 1 day after the procedure has greater contribution to early restenosis than to late restenosis after successful TEC atherectomy with adjunctive balloon angioplasty.
authors.affiliation: Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ishizaka
authors.forename: Y
authors.initials: Y
authors.lastname: Ikari
authors.forename: K
authors.initials: K
authors.lastname: Hara
authors.forename: F
authors.initials: F
authors.lastname: Saeki
authors.forename: Y
authors.initials: Y
authors.lastname: Ishizaka
authors.forename: T
authors.initials: T
authors.lastname: Degawa
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: H
authors.initials: H
authors.lastname: Sakatani
authors.forename: T
authors.initials: T
authors.lastname: Tamura
authors.forename: T
authors.initials: T
authors.lastname: Yamaguchi
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D017225:Atherectomy, Coronary / Q000295:instrumentation; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012008:Recurrence; D013997:Time Factors