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Updated: Jan 22, 2026

Intravital Microscopy and Thrombus Induction in the Earlobe of a Hairless Mouse
Published on: April 2, 2017
To Whom Thrombus Aspiration May Concern?
Mohamed Samy1, Yaser Nassar1, Abo Hamila Mohamed1
1Critical Care Department, Cairo University Hospitals, Cairo, Egypt.
Thrombus aspiration before primary percutaneous coronary intervention (PPCI) in ST-segment elevation myocardial infarction (STEMI) patients with high thrombus burden improves myocardial perfusion and procedural outcomes. This intervention did not increase major adverse cardiac and cerebrovascular events (MACCE).
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Coronary Syndromes
Background:
- Thrombus aspiration in ST-segment elevation myocardial infarction (STEMI) aims to enhance myocardial perfusion.
- Previous studies yielded conflicting results regarding the efficacy and safety of thrombus aspiration.
- Potential complications associated with thrombus aspiration warrant further investigation.
Purpose of the Study:
- To evaluate the impact of thrombus aspiration preceding primary percutaneous coronary intervention (PPCI) on angiographic outcomes.
- To assess the influence of thrombus aspiration on stent characteristics.
- To determine the effect of thrombus aspiration on major adverse cardiac and cerebrovascular events (MACCE).
Main Methods:
- A comparative study of 607 STEMI patients undergoing PPCI.
- Patients were divided into two groups: thrombectomy before PPCI (n=107) and conventional PPCI (n=500).
- Key metrics included ST-segment resolution, peak CK-MB, TIMI flow, thrombus score, myocardial blush grade (MBG), stent characteristics, and MACCE at in-hospital and 1-year follow-up.
Main Results:
- The thrombectomy group showed significantly better ST-segment resolution (58.9% vs 46.6%), lower peak CK-MB (228 vs 269 I/U), and improved TIMI flow.
- Myocardial blush grade (MBG) was higher in the thrombectomy group (2.4 vs 2.0).
- While patients in the thrombectomy group had higher thrombus scores, MACCE rates were similar between groups at both in-hospital (8.4% vs 14%) and 1-year follow-up (5.6% vs 16%).
Conclusions:
- Thrombus aspiration in selected STEMI patients (thrombus score ≥ 3) enhances myocardial perfusion and procedural success.
- The procedure is associated with improved angiographic markers and favorable stent characteristics.
- Thrombus aspiration in high-risk patients did not lead to a statistically significant increase in MACCE.
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