Long-term outcomes of drug-eluting versus bare-metal stent for ST-elevation myocardial infarction

Insights

Drug-eluting stents (DES) show no increased stent thrombosis risk compared to bare-metal stents (BMS) in ST-segment elevation myocardial infarction (STEMI) patients. DES may reduce reinfarction and lower long-term repeat revascularization needs.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Biomedical Engineering

Background:

  • Long-term outcomes of drug-eluting stents (DES) versus bare-metal stents (BMS) in ST-segment elevation myocardial infarction (STEMI) patients are not fully understood.
  • Uncertainty exists regarding the comparative safety and efficacy of DES and BMS in STEMI management.

Purpose of the Study:

  • To investigate the long-term efficacy and safety of DES compared to BMS in patients with STEMI.
  • To provide a comprehensive analysis of clinical outcomes following stent implantation in STEMI.

Main Methods:

  • A systematic literature search was conducted across major databases (MEDLINE, EMBASE, Cochrane, Web of Science) up to February 2013.
  • Randomized trials comparing DES and BMS in STEMI patients with over 12-month follow-up were included.
  • Pooled estimates were calculated using risk ratios (RR) and 95% confidence intervals (CI) with a random-effects model.

Main Results:

  • Ten trials involving 7,592 STEMI participants were analyzed.
  • No significant difference in all-cause death or definite/probable stent thrombosis was observed between DES and BMS.
  • DES showed a trend towards lower 1-year recurrent myocardial infarction (RR=0.75) and consistently reduced target vessel revascularization (TVR) (p < 0.01).
  • Everolimus-eluting stents (EES) subgroup analysis indicated a reduced risk of stent thrombosis (RR=0.37, p=0.02).

Conclusions:

  • Drug-eluting stents do not elevate stent thrombosis risk in STEMI patients compared to bare-metal stents.
  • DES implantation is associated with a lower long-term risk of repeat revascularization and may decrease the incidence of reinfarction in STEMI patients.
Abstract

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