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Postprocedure Anticoagulation in Patients With Acute ST-Segment Elevation Myocardial Infarction Undergoing Primary
Yan Yan1, Wei Gong1, Changsheng Ma2
1Center for Coronary Artery Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China; Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China; Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
Insights
Postprocedural anticoagulation (PPAC) after primary percutaneous coronary intervention for ST-elevation myocardial infarction (STEMI) significantly reduces mortality without increasing major bleeding risks. Further trials are needed to confirm these findings in contemporary STEMI management.
Area of Science:
- Cardiology
- Interventional Cardiology
- Clinical Outcomes Research
Background:
- Postprocedural anticoagulation (PPAC) use after primary percutaneous coronary intervention (pPCI) for ST-segment elevation myocardial infarction (STEMI) is debated.
- PPAC may reduce ischemic events but increase bleeding risk, with no established consensus on its use.
Purpose of the Study:
- To assess the association between PPAC use and clinical outcomes in STEMI patients undergoing pPCI.
- To evaluate the impact of PPAC on in-hospital mortality and major bleeding.
Main Methods:
- Retrospective analysis of 34,826 STEMI patients from the China-Acute Coronary Syndrome registry (2014-2019).
- Patients undergoing pPCI were stratified by PPAC use.
- Inverse probability of treatment weighting and Cox proportional hazards models were employed to adjust for baseline differences and analyze outcomes.
Main Results:
- PPAC was used in 75.4% of patients.
- After weighting, PPAC was associated with significantly reduced in-hospital mortality (HR: 0.62; P < 0.001).
- No significant difference in in-hospital major bleeding was observed between PPAC and non-PPAC groups (HR: 1.05; P = 0.14).
Conclusions:
- PPAC in STEMI patients post-pPCI is linked to lower mortality without a significant increase in major bleeding.
- Further randomized trials are recommended to validate these findings with current STEMI management protocols.
Objectives:
This study sought to assess the association between postprocedural anticoagulation (PPAC) use and several clinical outcomes.
Background:
PPAC after primary percutaneous coronary intervention (pPCI) in patients with ST-segment elevation myocardial infarction (STEMI) may prevent recurrent ischemic events but may increase the risk of bleeding. No consensus has been reached on PPAC use.
Methods:
Using data from the Improving Care for Cardiovascular Disease in China-Acute Coronary Syndrome registry, conducted between 2014 and 2019, we stratified all STEMI patients who underwent pPCI according to the use of PPAC or not. Inverse probability of treatment weighting and a Cox proportional hazards model with hospital as random effect were used to analyze differences in in-hospital clinical outcomes: the primary efficacy endpoint was mortality and the primary safety endpoint was major bleeding.
Results:
Of 34,826 evaluable patients, 26,272 (75.4%) were treated with PPAC and were on average younger, more stable at admission with lower bleeding risk score, more likely to have comorbidities and multivessel disease, and more often treated within 12 hours of symptom onset than those without PPAC. After inverse probability of treatment weighting adjustment for baseline differences, PPAC was associated with significantly reduced risk of in-hospital mortality (0.9% vs 1.8%; HR: 0.62; 95% CI: 0.43-0.89; P < 0.001) and a nonsignificant difference in risk of in-hospital major bleeding (2.5% vs 2.2%; HR: 1.05; 95% CI: 0.83-1.32; P = 0.14).
Conclusions:
PPAC in STEMI patients after pPCI was associated with reduced mortality without increasing major bleeding complications. Dedicated randomized trials with contemporary STEMI management are needed to confirm these findings.
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