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Successful visible thrombus aspiration in ST-segment elevation myocardial infarction: associated factors and the

Tomomi Watanabe1, Toshihiko Akasaka, Satoshi Kobara

  • 1Division of Cardiovascular Medicine and Endocrinology and Metabolism, Faculty of Medicine, Tottori University, Tottori, Japan.

Coronary Artery Disease
|July 11, 2022
PubMed

Insights

Successful thrombus aspiration (TA) in ST-elevation myocardial infarction (STEMI) is linked to using larger catheters and improved angiographical outcomes. This study explored factors influencing successful TA and its clinical impact.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Vascular Medicine

Background:

  • Thrombus aspiration (TA) is used to manage distal emboli and enhance microvascular perfusion in ST-elevation myocardial infarction (STEMI).
  • Current guidelines recommend against routine TA due to limited efficacy and high failure rates in material retrieval.
  • This study investigates factors influencing successful TA and its clinical significance in STEMI patients.

Purpose of the Study:

  • To identify patient and procedural factors associated with successful thrombus aspiration in STEMI.
  • To evaluate the angiographical and short-term clinical impact of successful thrombus aspiration.

Main Methods:

  • A single-center retrospective study of 158 STEMI patients undergoing TA as initial reperfusion therapy.
  • Successful TA defined as retrieval of visible thrombus material.
  • Analysis of angiographical and procedural factors, including catheter size, and assessment of outcomes.

Main Results:

  • Successful TA was achieved in 45.6% of patients.
  • Higher Thrombolysis in Myocardial Infarction (TIMI) grade before TA and use of a 7-French catheter were associated with successful aspiration.
  • Successful TA correlated with improved TIMI flow post-procedure and at final angiography.

Conclusions:

  • Larger aspiration catheters (7-French) may improve the success rate of thrombus retrieval.
  • Successful TA is associated with enhanced angiographical results in STEMI patients.
Abstract

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