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Published on: May 28, 2019
Thrombectomy during Percutaneous Coronary Intervention in Patients With St Elevation Myocardial Infarction
Samarthkumar Thakkar1, Safi Khan1, Ambica Nair2
1Department of Cardiology, Houston Methodist DeBakey Heart and Vascular Center, Houston, Texas.
Insights
Adjunctive thrombectomy in ST-elevation myocardial infarction (STEMI) did not increase mortality or stroke risk. However, it was linked to higher heart failure readmissions and transfusion needs, suggesting selective use.
Area of Science:
- Cardiology
- Interventional Cardiology
- Acute Coronary Syndromes
Background:
- Adjunctive thrombectomy during percutaneous coronary intervention (PCI) for ST-elevation myocardial infarction (STEMI) remains controversial.
- Previous studies on its efficacy and safety have produced mixed results.
Purpose of the Study:
- To evaluate the impact of adjunctive thrombectomy on clinical outcomes in STEMI patients undergoing PCI.
- To compare mortality, stroke, heart failure readmissions, and transfusion rates between patients who did and did not receive thrombectomy.
Main Methods:
- Retrospective cohort study using the TriNetX network.
- Analysis of 50,104 hospitalized STEMI patients undergoing PCI from January 2016 to December 2023.
- 1:1 propensity score matching to compare outcomes between thrombectomy (n=1,967) and non-thrombectomy groups.
Main Results:
- No significant difference in 30-day or 1-year all-cause mortality or stroke risk between groups.
- Higher rates of 1-year heart failure readmissions in the thrombectomy group.
- Increased blood transfusion requirements observed in patients who underwent thrombectomy.
Conclusions:
- Adjunctive thrombectomy in STEMI PCI is not associated with increased mortality or stroke.
- The procedure is linked to adverse outcomes including heart failure readmissions and higher transfusion needs.
- Consideration for thrombectomy should be limited to carefully selected patients, especially those with high thrombus burden, pending further prospective research.
Abstract:
Adjunctive thrombectomy during percutaneous coronary intervention (PCI) involves the mechanical removal of thrombus prior to balloon inflation and stent deployment .This has been a topic of ongoing debate in the management of ST-elevation myocardial infarction (STEMI), with prior studies yielding mixed outcomes. In this retrospective cohort study utilizing the TriNetX network, we analyzed data from hospitalized STEMI patients who underwent PCI between January 1, 2016, and December 31, 2023, stratifying them based on the use of adjunctive thrombectomy. Out of 50,104 patients, 1,967 (3.9%) underwent thrombectomy. After 1:1 propensity score matching to adjust for baseline differences, we found no significant differences in 30-day or 1-year all-cause mortality (HR: 1.212; 95% CI: 1.044 to 1.406) or stroke risk (HR: 0.865; 95% CI: 0.400 to 1.870) between the thrombectomy and nonthrombectomy groups. However, patients in the thrombectomy group experienced higher rates of heart failure (HF) readmissions and blood transfusion requirements at 1 year. These findings suggest that while adjunctive thrombectomy does not appear to increase the risk of mortality or stroke, its association with adverse clinical outcomes such as HF and transfusion needs indicates that its use should be reserved for carefully selected patients, particularly those with a high thrombus burden. Further prospective studies are necessary to clarify its role and determine the patient populations most likely to benefit.
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