title: Short- and long-term clinical effects of primary directional coronary atherectomy for acute myocardial infarction.
abstract: We performed primary directional coronary atherectomy (DCA) without antecedent thrombolytic therapy in 21 of 67 patients with acute myocardial infarction within 24 hr of onset between June 1993-March 1994. Reperfusion with primary DCA was successful in 18 patients (85.7%, group D). Results were compared with those of primary balloon angioplasty patients treated between June 1992-May 1993 (group P). Minimum lumen diameter (MLD) values both immediately after reperfusion and in predischarge angiograms were significantly larger in group D than in group P, but were similar in late follow-up angiograms. Although a larger MLD in group D than in group P contributed to the prevention of reocclusion of the coronary artery before discharge in DCA patients, a high rate of restenosis at late follow-up canceled the beneficial effects of primary DCA.
authors.affiliation: Cardiology Center, Shonan Kamakura General Hospital, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Saito
authors.forename: K
authors.initials: K
authors.lastname: Kim
authors.forename: G
authors.initials: G
authors.lastname: Hosokawa
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
authors.forename: S
authors.initials: S
authors.lastname: Miyake
authors.forename: K
authors.initials: K
authors.lastname: Harada
authors.forename: K
authors.initials: K
authors.lastname: Hirobayashi
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D017225:Atherectomy, Coronary / Q000295:instrumentation / Q000379:methods; D002404:Catheterization / Q000379:methods; D015331:Cohort Studies; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000628:therapy*; D015425:Myocardial Reperfusion / Q000379:methods; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency / Q000502:physiology