title: New stenosis on proximal coronary segment after directional atherectomy. Two case reports.
abstract: Two patients with new coronary stenotic lesions subsequently developed proximal to the sites accepting directional coronary atherectomy (DCA) are reported. One lesion developed at the left main coronary artery and the other at the proximal segment of the left anterior descending artery. The mechanisms of the development of such new stenotic lesions after DCA were studied and procedure-related mechanical trauma over the proximal segment of the primary lesion may be the possible mechanism for such complication.
authors.affiliation: Department of Medicine, National Yang-Ming University, School of Medicine, Taipei, Taiwan, Republic of China.
authors.forename: N W
authors.initials: NW
authors.lastname: Hsu
authors.forename: C I
authors.initials: CI
authors.lastname: Chen
authors.forename: G Y
authors.initials: GY
authors.lastname: Mar
authors.forename: W L
authors.initials: WL
authors.lastname: Chan
authors.forename: J W
authors.initials: JW
authors.lastname: Chen
authors.forename: C W
authors.initials: CW
authors.lastname: Kong
authors.forename: S P
authors.initials: SP
authors.lastname: Wang
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000209:etiology; D017225:Atherectomy, Coronary / Q000009:adverse effects; D003327:Coronary Disease / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D003331:Coronary Vessels / Q000293:injuries / Q000473:pathology / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000209:etiology; D012008:Recurrence; D017539:Tunica Intima / Q000293:injuries / Q000473:pathology