Initial experience with a continuous mechanical aspiration system for thrombus removal before percutaneous coronary...

Area of Science:

• Cardiovascular medicine
• Interventional cardiology
• Medical device technology

Background:

• Manual aspiration thrombectomy in acute coronary syndrome (ACS) has yielded inconsistent results.
• Technical limitations, such as decreasing vacuum power, may hinder manual aspiration efficacy.
• Continuous mechanical aspiration offers a potential solution to overcome these limitations.

Purpose of the Study:

• To evaluate the safety and efficacy of a continuous mechanical aspiration system.
• To assess its use before percutaneous coronary intervention (PCI) in patients with ACS.
• To determine its effectiveness in reducing thrombus burden and restoring coronary blood flow.

Main Methods:

• Retrospective case series of 72 patients treated with the Indigo CAT RX Aspiration System.
• Patients presented with ST-Elevation Myocardial Infarction (STEMI) or Non-ST-Elevation Myocardial Infarction (NSTEMI).
• Data collected included angiographic assessments, procedural details, and safety outcomes.

Main Results:

• Pre-procedure, 94.4% of patients had a high thrombus burden (TIMI thrombus grade ≥ 3).
• Following aspiration with CAT RX alone, 86.1% achieved complete perfusion (TIMI flow grade 3).
• Post-procedure, 94.4% had reduced thrombus burden (TIMI < 3) and 97.2% had TIMI flow grade 3. No ischemic strokes occurred, with 30-day cardiovascular mortality at 1.4%.

Conclusions:

• The Indigo CAT RX Aspiration System appears safe and effective for aspirating thrombus in ACS patients.
• The system successfully reduced thrombus burden and restored coronary blood flow before PCI.
• This technology shows potential for improving treatment outcomes in acute coronary syndromes.