title: Optimal timing of coronary stenting in unstable angina patients.
abstract: OBJECTIVE
  To assess the efficacy and safety of intracoronary stenting in the acute phase of unstable angina pectoris (UAP).
  
  
  METHODS
  Fifty-five patients with UAP were randomized to early (Group I, n = 29) and delayed interventional treatment (Group II, n = 26). Coronary angiography and stenting were performed within 48 hours in Group I and 7-10 days later in Group II. Procedural success rate, time interval from admission to angina relief and duration of hospitalization were recorded. Cardiac events within 30 days were observed as well.
  
  
  RESULTS
  Clinical characteristics and angiographic features were similar between the two groups. There was no significant difference in the procedural success rate (93% versus 96%), but the cardiac event rate within 30 days was significantly lower in Group I than in Group II (0% versus 9.2%, P < 0.05). The time interval from admission to angina relief (4.4 +/- 3.1 days versus 5.7 +/- 2.9 days) and the duration of hospitalization (8.8 +/- 3.2 days versus 13.5 +/- 3.1 days) were significantly reduced in Group I (both P < 0.05).
  
  
  CONCLUSIONS
  Intracoronary stent implantation is effective and safe in the acute phase of UAP. Early percutaneous coronary intervention results in rapid improvement in symptomatology and a shorter hospitalization. Its long-term effect has to be confirmed in a future randomized study.
authors.affiliation: Department of Cardiology, Ruijin Hospital, Shanghai Second Medical University, Shanghai 200025, China.
authors.forename: W
authors.initials: W
authors.lastname: Shen
authors.forename: R
authors.initials: R
authors.lastname: Zhang
authors.forename: Y
authors.initials: Y
authors.lastname: Shen
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.forename: D
authors.initials: D
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Zhang
authors.forename: A
authors.initials: A
authors.lastname: Zheng
mesh_terms: D000368:Aged; D000789:Angina, Unstable / Q000628:therapy*; D017023:Coronary Angiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents; D013997:Time Factors