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Published on: February 28, 2012

Triple Antithrombotic Therapy for the Prevention of Left Ventricular Thrombus Following Anterior ST-Elevation

Anastasios Apostolos1,2, Vasileios Panoulas1,2

  • 1Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom.

Journal of Cardiovascular Pharmacology
|August 20, 2026
PubMed

Insights

Triple antithrombotic treatment (TAT) does not reduce left ventricular thrombus (LVT) formation in anterior ST-elevation myocardial infarction (STEMI) patients after primary percutaneous coronary intervention (pPCI). TAT significantly increases major bleeding risk, questioning its routine prophylactic use.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Thrombosis Research

Background:

  • Left ventricular thrombus (LVT) is a significant complication following anterior ST-elevation myocardial infarction (STEMI).
  • Prophylactic anticoagulation is recommended for high-risk patients, but evidence quality is low.
  • Primary percutaneous coronary intervention (pPCI) is the standard reperfusion therapy for STEMI.

Purpose of the Study:

  • To evaluate the efficacy and safety of triple antithrombotic treatment (TAT) compared to dual antiplatelet therapy (DAPT) alone for LVT prevention.
  • To assess the impact of TAT on LVT formation, major bleeding, and systemic embolism in anterior STEMI patients undergoing pPCI.

Main Methods:

  • Systematic review and meta-analysis of six studies involving 2,021 patients.
  • Searched EMBASE, MEDLINE, and Cochrane Library databases following PRISMA 2020 guidelines.
  • Pooled data using random-effects models to calculate risk ratios (RR) and 95% confidence intervals (CI).

Main Results:

  • Triple antithrombotic treatment (TAT) did not significantly reduce left ventricular thrombus (LVT) formation (RR 0.54, p=0.21).
  • TAT significantly increased the risk of major bleeding (RR 2.69, p=0.003).
  • A non-significant trend towards reduced systemic embolism was observed with TAT (RR 0.44, p=0.07).

Conclusions:

  • Prophylactic TAT in anterior STEMI patients treated with pPCI does not significantly decrease LVT formation.
  • The increased risk of major bleeding associated with TAT outweighs potential benefits in unselected patients.
  • Routine prophylactic TAT is not supported for unselected anterior STEMI patients undergoing pPCI.

Keywords:
ST-elevation myocardial infarctionanticoagulationdual antiplatelet therapyleft ventricular thrombusmeta-analysis

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