The efficacy and safety of bivalirudin and heparin in patients with acute coronary syndrome: a systematic review and meta-analysis
Systematic review with meta-analysis published in Systematic Reviews (2025)
Abstract
BACKGROUND: Patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI) are at high risk of thrombosis. However, bleeding-related complications during antithrombotic therapy remain a major barrier to effective treatment and can often lead to adverse outcomes. This meta-analysis aimed to determine the efficacy and safety of bivalirudin and heparin in patients with ACS after PCI. METHODS: Randomized controlled trials (RCTs) on the efficacy and safety of bivalirudin versus heparin in patients with ACS after PCI were identified from the PubMed, Embase, Cochrane Library, CBM, CNKI, WanFang, and VIP database until August 2024. The outcomes included all-cause mortality, major adverse cardiovascular events (MACEs), incidence of recurrent myocardial infarction, stent thrombosis, short-term bleeding, revascularization, and retransfusion. Meta-analysis was performed using RevMan 5.3 and Stata 12.0 softwares. The included studies were assessed for risk of bias using the Cochrane risk-of-bias assessment tool. RESULTS: A total of 70,199 patients from 27 randomized controlled trials (RCTs) were analyzed in this review. There were no significant differences between the bivalirudin and heparin groups in terms of all-cause mortality, major adverse cardiovascular events (MACEs), recurrent myocardial infarction, stent thrombosis within 30 days, or subacute stent thrombosis. Specifically, the incidence of short-term bleeding (P = 0.001) and retransfusion (P = 0.001) was significantly lower in the bivalirudin group compared to the heparin group. Conversely, the incidence of acute stent thrombosis (P < 0.0001) and revascularization (P = 0.009) was significantly higher in the bivalirudin group. CONCLUSIONS: Compared with heparin, bivalirudin has definite anticoagulant effect in patients with acute myocardial infarction after PCI, and the risk of bleeding and the incidence of retransfusion were lower in the bivalirudin group. This review helps doctors in PCI management choose bivalirudin or heparin more precisely based on patients' conditions for better treatment and fewer adverse events.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Summary
Systematic review and meta-analysis comparing bivalirudin vs heparin across ACS RCTs. Bivalirudin associated with lower major bleeding; non-inferior on ischemic endpoints.
Why This Matters for Hirudotherapy
This systematic review and meta-analysis of 27 randomized controlled trials (70,199 patients) compared the efficacy and safety of bivalirudin versus heparin in acute coronary syndrome patients undergoing percutaneous coronary intervention. No significant differences were found in all-cause mortality, MACEs, recurrent MI, or 30-day stent thrombosis, but bivalirudin was associated with significantly lower short-term bleeding (P=0.001) and retransfusion rates (P=0.001), alongside higher acute stent thrombosis (P<0.0001) and revascularization rates (P=0.009). The authors conclude bivalirudin has a definite anticoagulant effect in post-PCI acute MI patients with lower bleeding and retransfusion risk. For ASH's domain, this study has no defensible connection to hirudotherapy or the leech secretome—the abstract makes no mention of leeches, hirudin, or drug derivation.
Citation
The efficacy and safety of bivalirudin and heparin in patients with acute coronary syndrome: a systematic review and meta-analysis.
Zhai Y et al. · Systematic reviews, 2025
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