Long-term outcome after thrombectomy in acute myocardial infarction
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Published on: January 18, 2018
C Adlbrecht1, K Distelmaier, D Bonderman
1Medical University of Vienna, 1090 Vienna, Austria.
Insights
Thrombectomy for ST-elevation myocardial infarction (STEMI) significantly reduces long-term risks of death and cardiac re-hospitalization. This study confirms improved survival outcomes for STEMI patients treated with thrombectomy compared to standard percutaneous coronary intervention.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Research
Background:
- ST-elevation myocardial infarction (STEMI) management often involves percutaneous coronary intervention (PCI).
- While thrombectomy is favored in STEMI, long-term outcomes data remain limited.
- This study addresses the long-term impact of thrombectomy post-STEMI.
Purpose of the Study:
- To assess the long-term risk of cardiac re-hospitalization and survival after index hospitalization for STEMI.
- To evaluate the impact of thrombectomy combined with PCI versus standard PCI on long-term patient outcomes.
- To analyze secondary endpoints including cardiac hospitalization duration and ventricular remodeling.
Main Methods:
- Retrospective analysis of patients originally randomized to PCI with thrombectomy versus standard PCI.
- Primary endpoint: combined risk of all-cause death or cardiac re-hospitalization post-discharge.
- Secondary endpoints: cumulative cardiac hospitalization days, echocardiographic ventricular remodeling, and plasma biomarkers.
Main Results:
- Patients receiving thrombectomy (n=43) showed a significantly lower risk of death or cardiac re-hospitalization compared to standard PCI (n=46) (HR=0.69, P=0.036).
- No significant difference in recurrent myocardial infarction incidence was observed (P=0.343).
- Lower heart-type fatty acid binding protein levels were noted in the thrombectomy group at long-term follow-up (P=0.045), with no other significant differences in cardiac remodeling.
Conclusions:
- Thrombectomy in STEMI patients may lead to a decreased long-term risk of mortality and cardiac re-hospitalization.
- The findings support the long-term benefits of thrombectomy as an adjunct to primary PCI in STEMI management.
Background:
Current data appear in favour of thrombectomy for ST-elevation myocardial infarction (STEMI). However, information on long-term outcome after thrombectomy is limited. We performed a retrospective long-term study to assess the risk of cardiac re-hospitalizations and survival after discharge from the index hospitalization for STEMI.
Methods:
Patients originally randomized to percutaneous coronary intervention (PCI) with thrombectomy vs. standard PCI were included in a retrospective long-term observational study. The primary study endpoint was the combined risk for all-cause death or cardiac re-hospitalization after index discharge under optimal medical therapy. The cumulative number of cardiac hospitalization days and ventricular remodelling assessed by echocardiography and plasma biomarkers were secondary endpoints.
Results:
Of 94 STEMI patients who had been randomized between 11/2000 and 03/2003, 89 patients consented to long-term follow-up. A total of 43 patients had been allocated to thrombectomy and 46 to standard primary PCI. The minimum follow-up time was 1115 days. There was a significantly lower risk for death or cardiac re-hospitalization for patients of the thrombectomy group (hazard ratio = 0.69, 95% CI: 0.49-0.98, P = 0.036). The incidence of recurrent myocardial infarction was not different (P = 0.343). No differences in cardiac remodelling were detected by echocardiography, with the exception that heart-type fatty acid binding protein at 53.2 +/- 17 months was lower in the thrombectomy group (P = 0.045).
Conclusion:
Thrombectomy in STEMI may decrease the long-term risk for death or cardiac re-hospitalization.
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