Comparison of incidence and angiography patterns in definite thrombosis between drug-eluting and bare-metal stents

Insights

Stent thrombosis, a serious complication of percutaneous coronary intervention, occurred similarly in patients receiving drug-eluting or bare-metal stents. Late stent thrombosis was rare but more frequent with drug-eluting stents.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Biomedical Engineering

Background:

  • Stent thrombosis is a critical complication following percutaneous coronary intervention (PCI).
  • Understanding the comparative incidence of thrombosis between different stent types is crucial for patient outcomes.

Purpose of the Study:

  • To analyze the incidence of angiographically-confirmed stent thrombosis in patients treated with drug-eluting stents (DES) versus bare-metal stents (BMS).

Main Methods:

  • A retrospective analysis of 5011 consecutive patients undergoing PCI with either DES or BMS.
  • Assessment of angiographically-confirmed stent thrombosis incidence and timing.

Main Results:

  • The overall incidence of stent thrombosis was 0.8% in both DES and BMS groups.
  • Angiographically-documented late stent thrombosis was infrequent but occurred more often with DES (0.25%) compared to BMS (0.06%, P=.03).

Conclusions:

  • While overall stent thrombosis rates are similar, late thrombosis is a rare but notable concern with DES.
  • Further research into mitigating late thrombosis risk with DES is warranted.

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