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Thrombosuction utilizing an export aspiration catheter during primary percutaneous coronary intervention in acute
Woong Chol Kang1, Tae Hoon Ahn, Seung Hwan Han
1Division of Cardiology, Gil Medical Center, Gachon University of Medicine and Science, 1198 Kuwol-Dong, Namdong-Gu, Incheon, Korea.
Insights
Thrombosuction using an export aspiration catheter (EAC) during primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) safely improved coronary blood flow. This technique shows potential for better restoration of blood flow in AMI patients with thrombus burden.
Area of Science:
- Cardiology
- Interventional Cardiology
- Vascular Medicine
Background:
- Primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) can be limited by distal embolization and slow/no-reflow.
- Thrombus burden in AMI lesions poses a significant challenge to effective myocardial reperfusion.
Purpose of the Study:
- To evaluate the efficacy of an export aspiration catheter (EAC) for thrombosuction during primary PCI.
- To assess the impact of thrombosuction on coronary blood flow restoration and clinical outcomes in AMI patients.
Main Methods:
- A prospective analysis of 62 AMI patients undergoing primary PCI.
- Patients were divided into an EAC group (n=31) undergoing thrombosuction and a control group (n=31) without thrombosuction.
- Coronary flow was assessed using TIMI flow grade, TIMI perfusion grade, and corrected TIMI frame counts.
Main Results:
- Thrombosuction with EAC was safely performed in all patients.
- Significantly more patients in the EAC group achieved TIMI flow grade 3 post-PCI (26/31 vs. 20/31, p < 0.05).
- The EAC group showed lower corrected TIMI frame counts (23.9 vs. 34.8, p < 0.05) and a trend towards reduced distal embolization (0% vs. 16.1%, p=0.056).
Conclusions:
- Thrombosuction with an EAC is a safe and potentially effective method for restoring coronary flow in AMI.
- This technique may help mitigate slow/no-reflow and distal embolization during primary PCI for AMIs with thrombus burden.
Purpose:
Effective myocardial reperfusion after primary PCI for an AMI in lesions with a thrombus is limited by distal embolization and the slow/no reflow phenomenon. We evaluated the efficacy of a thrombus reduction technique using an export aspiration catheter for thrombosuction during primary PCI.
Materials And Methods:
We analyzed 62 patients with AMIs who underwent primary PCI and had a thrombi burden during thrombosuction using an EAC (EAC group; n=31) or without thrombosuction (control group; n=31).
Results:
Thrombosuction with an EAC was performed safely in all the patients in EAC group without any complications. After the PCI, restoration to a TIMI flow grade 3 was significantly more frequent in the EAC group (26/31 vs. 20/31, p < 0.05). However, the TIMI perfusion grade did not differ between the two groups. Further, the corrected TIMI frame counts were lower in the EAC group (23.9 +/- 15.1 vs. 34.8 +/- 22.5, p < 0.05). Although there was no statistical significance, a greater incidence of distal embolization was observed in the control group (16.1%, 5/31) as compared to the EAC group (0/31) (p= 0.056). However, the incidence of major adverse cardiac events at 1 and 6 months did not differ between the two groups.
Conclusion:
For AMIs, thrombosuction with an EAC before or during PCI is a safe and potentially effective method for restoration of the coronary flow.
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