title: Stenting vs. balloon angioplasty with provisional stenting for the treatment of vessels with small reference diameter.
abstract: A consecutive series of interventions in vessels with reference diameter < or = 2.75 mm was retrospectively analyzed according to preprocedure strategy: balloon angioplasty with provisional stenting (PTCA group, 73 patients) and primary stenting (PS group, 122 patients). In the PS group, there were more patients with single-vessel disease (54.1% vs. 37.0%; P = 0.021), less patients with three-vessel disease (9.0% vs. 24.7%; P = 0.003), more LAD interventions (54.9% vs. 31.5; P = 0.002), and less left circumflex interventions (22.1% vs. 45.2%; P < 0.001). Reference diameter was larger in the PS group (2.28 +/- 0.35 mm vs. 2.11 +/- 0.36 mm; P = 0.001). Provisional stenting was performed in 39.7% of PTCA group. At long-term outcome, the incidence of composite major events was similar between the PTCA and the PS groups (20.5% vs. 17.2%, respectively; P = NS). Treatment of small vessels with balloon dilatation and provisional stenting or with primary stenting yielded similar late outcomes. Operators' choice of treatment strategy was based on particular angiographic characteristics.
authors.affiliation: Catheterization Laboratory, Heart Institute (InCor) of University of Sao Paulo Medical School, Sao Paulo, Brazil.
authors.forename: Pedro A
authors.initials: PA
authors.lastname: Lemos
authors.forename: Eulogio E
authors.initials: EE
authors.lastname: Martinez
authors.forename: Edgard
authors.initials: E
authors.lastname: Quintella
authors.forename: Lari C
authors.initials: LC
authors.lastname: Harrell
authors.forename: Jose A F
authors.initials: JA
authors.lastname: Ramires
authors.forename: Expedito E
authors.initials: EE
authors.lastname: Ribeiro
authors.forename: Marcus N
authors.initials: MN
authors.lastname: da Gama
authors.forename: Pedro E
authors.initials: PE
authors.lastname: Horta
authors.forename: Luiz J
authors.initials: LJ
authors.lastname: Kajita
authors.forename: Antonio
authors.initials: A
authors.lastname: Esteves
authors.forename: Marco A
authors.initials: MA
authors.lastname: Perin
authors.forename: Paulo R
authors.initials: PR
authors.lastname: Soares
authors.forename: Silvio
authors.initials: S
authors.lastname: Zalc
authors.forename: Igor F
authors.initials: IF
authors.lastname: Palacios
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy*; D023903:Coronary Restenosis / Q000517:prevention & control; D003331:Coronary Vessels / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome