[Incidence of intrahospitalary major cardiac events with the use of mechanic thromboaspiration versus only use of...

Area of Science:

• Cardiology
• Interventional Cardiology
• Acute Coronary Syndromes

Background:

• Acute ST-elevation myocardial infarction (STEMI) with high thrombus burden presents treatment challenges.
• Glycoprotein IIb/IIIa inhibitors are a standard treatment, but additional mechanical interventions are explored.
• Mechanical thromboaspiration aims to remove thrombus, potentially improving outcomes.

Purpose of the Study:

• To compare in-hospital major adverse cardiac events (MACE) rates.
• To evaluate the efficacy of mechanical thromboaspiration plus glycoprotein IIb/IIIa inhibitors versus glycoprotein IIb/IIIa inhibitors alone in STEMI patients.
• To assess the incidence of malignant arrhythmias with both treatment strategies.

Main Methods:

• Retrospective, observational cohort study.
• Included 237 STEMI patients with thrombus (TIMI grade 5) treated between October 2021 and December 2022.
• Compared outcomes between patients receiving mechanical thromboaspiration plus glycoprotein IIb/IIIa inhibitors (n=113) and those receiving only glycoprotein IIb/IIIa inhibitors (n=124).

Main Results:

• No significant difference in in-hospital MACE between groups (31.9% vs. 30.6%, RR: 1.05; p=0.840).
• Higher incidence of malignant arrhythmias in the thromboaspiration group (8% vs. 1.6%, RR: 5.27; p=0.020).
• 81.6% of the total study population were men.

Conclusions:

• Mechanical thromboaspiration with glycoprotein IIb/IIIa inhibitors showed similar efficacy to glycoprotein IIb/IIIa inhibitors alone for in-hospital MACE in STEMI patients with high thrombus burden.
• The increased risk of malignant arrhythmias with thromboaspiration necessitates careful consideration.
• Study limitations suggest results should be interpreted with caution.