Article Text

other Versions

PDF
Impact of Arterial Remodeling and Plaque Rupture on Target and Non-Target Lesion Revascularization Following Stent Implantation in Patients with Acute Coronary Syndrome: An Intravascular Ultrasound Study
  1. Hiroyuki Okura (hokura{at}fides.dti.ne.jp)
  1. Bell Land General Hospital, Japan
    1. Haruyuki Taguchi
    1. Bell Land General Hospital, Japan
      1. Tomoichiro Kubo
      1. Bell Land General Hospital, Japan
        1. Iku Toda
        1. Bell Land General Hospital, Japan
          1. Minoru Yoshiyama
          1. Osaka City University Medical School, Japan
            1. Junichi Yoshikawa
            1. Osaka Ekisaikai Hospital, Japan
              1. Kiyoshi Yoshida
              1. Kawasaki Medical School, Japan

                Abstract

                Objectives The aim of this study was to investigate impact of arterial remodeling on long-term clinical outcome following stent implantation in patients with acute coronary syndrome (ACS).

                Methods A total of 134 patients with ACS were enrolled. External elastic membrane cross sectional area (EEM CSA) and lumen CSA were measured. Plaque plus media (P+M) CSA was calculated as EEM minus lumen CSA. Final minimal stent area (MSA) was also measured after stenting. Positive remodeling (PR) was defined as the ratio of the EEM CSA at the target lesion to that at the proximal reference of > 1.05, and intermediate or negative remodeling (IR/NR) was defined as that of ≤ 1.05.

                Results Although final MSA was similar, target lesion revascularization (TLR) rates at 2 years were significantly higher in patients with PR (33.7 %) than IR/NR (13.7 %) (p=0.01). In addition, non-TLR rates was also significantly higher in patients with PR (42.2 %) than IR/NR (23.5 %) (p=0.03). Cardiac events (death, myocardial infarction, TLR and non-TLR)-free survival was significantly lower in patients with PR than IR/NR (Log-rank, p=0.001). By multivariate logistic regression analysis, PR (chi-square 6.57, OR 2.70; 95% CI, 1.27-5.78; p=0.01) and plaque rupture (chi-square 4.17, OR 2.38; 95% CI, 1.04-5.45; p=0.04) were independent predictors of cardiac events.

                Conclusion In patients with ACS, PR and IVUS findings that may correspond with plaque rupture predict cardiac events including both TLR and non-TLR at 2 years.

                • acute coronary syndrome
                • prognosis
                • remodeling
                • stent
                • ultrasound

                Statistics from Altmetric.com

                Request permissions

                If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.