title: Unstable angina patients treated with percutaneous coronary intervention in the new millennium: what characterizes them?
abstract: OBJECTIVE
  To identify clinical and angiographic profiles of patients with unstable angina seen at a tertiary hospital and treated with percutaneous coronary intervention (PCI).
  
  
  METHODS
  Study of a consecutive series of 1413 patients, selected from a computerized database, who underwent percutaneous revascularization in the three-year period of 2002-2004. There were no inclusion/exclusion criteria.
  
  
  RESULTS
  Systemic arterial hypertension (74%) and hypercholesterolemia (65%) were the classical risk factors for coronary disease most frequently observed. Coronary artery bypass grafting and history of myocardial infarction were found in 24% and 28% of the cases, respectively. The subgroups most commonly treated were the IIB (48%) and IIIB (28%). Clopidogrel was prescribed for 51% of the patients and glycoprotein IIb/IIIa inhibitors, for 7%. Multivessel disease evidenced by coronary angiography was detected in 42% of the cases. Type B2 or C lesions were treated in 64%, 94% of which in native vessels. Restenotic lesions were dilated in 5% of the patients. All interventions were performed using coronary stents, the majority of which (67%) were standard bare-metal stents.
  
  
  CONCLUSIONS
  1) Subgroups IIB and IIIB were the most frequently treated (76%); 2) Clopidogrel was the most prescribed antithrombotic agent (51%); 3) Multivessel coronary artery disease was found in 42% of the cases, most of which were complex target lesions located in native vessels; 4) Coronary stent implantation was the chief dilation technique used.
authors.affiliation: Instituto Dante Pazzanese de Cardiologia, São Paulo, SP, Brazil.
authors.forename: Daniele da Silva
authors.initials: Dda S
authors.lastname: Peixoto
authors.forename: Luiz Fernando Leite
authors.initials: LF
authors.lastname: Tanajura
authors.forename: Amanda G M R
authors.initials: AG
authors.lastname: Sousa
authors.forename: Marinella Patrizia
authors.initials: MP
authors.lastname: Centemero
authors.forename: Aurea Jacob
authors.initials: AJ
authors.lastname: Chaves
authors.forename: Júlio de Paiva
authors.initials: Jde P
authors.lastname: Maia
authors.forename: Alberto Gomes Taques
authors.initials: AG
authors.lastname: Fonseca
authors.forename: Luiz Alberto
authors.initials: LA
authors.lastname: Piva e Mattos
authors.forename: Fausto
authors.initials: F
authors.lastname: Feres
authors.forename: José Eduardo M R
authors.initials: JE
authors.lastname: Sousa
mesh_terms: D000789:Angina, Unstable / Q000145:classification / Q000628:therapy*; D015906:Angioplasty, Balloon, Coronary; D005260:Female; D005343:Fibrinolytic Agents / Q000008:administration & dosage*; D006493:Heparin / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents
chemical_list: D005343:Fibrinolytic Agents; D006493:Heparin