Acute and follow-up results using a new atherectomy catheter for proximal LAD lesions and influence on LCx ostium.
OBJECTIVE
The purpose of this study is to evaluate the acute and chronic results of directional coronary atherectomy (DCA) using the Flexi-Cut atherectomy catheter to treat a left anterior descending artery (LAD) proximal lesion and the device's effect on the ostium of the left circumflex (LCx) immediately and during the postprocedure follow-up period.


METHODS
From June 2001 to October 2004, 74 lesions were treated by DCA alone for LAD proximal lesions. Quantitative coronary angiography was performed pre-, post-DCA and during the follow-up period for the treated site and the LCx ostium.


RESULTS
The angiographic restenosis rate was 12.2%. The target lesion revascularization rate was 9.5%. After the procedure and during follow up, there was no evidence of LCx stenosis (% DS > 50%) caused by DCA.


CONCLUSIONS
This study suggests that DCA for LAD proximal lesions is a feasible strategy and does not affect the LCx ostium.
Oikawa
Yuji
Y
Department of Cardiology, The Cardiovascular Institute, 7-3-10 Roppongi, Minato-ku Tokyo, Japan, 106-0032. oikawa@cvi.or.jp
Yajima
Junji
J
Kirigaya
Hajime
H
Nagashima
Kazuyuki
K
Akabane
Masafumi
M
Funada
Ryuichi
R
Matsuno
Shunsuke
S
Aizawa
Tadanori
T
D000368:Aged; D017225:Atherectomy, Coronary / Q000295:instrumentation* / Q000379:methods; D002404:Catheterization; D015331:Cohort Studies; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D023903:Coronary Restenosis / Q000000981:diagnostic imaging / Q000453:epidemiology*; D004867:Equipment Design; D004869:Equipment Safety; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D018570:Risk Assessment; D013997:Time Factors; D016896:Treatment Outcome