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TEG-Guided Anticoagulation Assessment in Deep Vein Arterialization: A Prospective Analysis
Isabella F Cieri1, Adriana A Rodriguez Alvarez1, Shiv Patel1
1Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Boston, MA.
Annals of Vascular Surgery
|December 29, 2024
Summary
Deep vein arterialization (DVA) for limb salvage requires optimized thromboprophylaxis. Dual antiplatelet therapy plus direct oral anticoagulant (DAPT + DOAC) showed superior platelet inhibition and reduced clot formation in DVA patients.
Area of Science:
- Vascular Surgery
- Interventional Cardiology
- Hematology
Background:
- Deep vein arterialization (DVA) is an emerging surgical technique to restore blood flow in critically ischemic limbs.
- Effective post-revascularization flow maintenance is vital for limb salvage, yet standardized thromboprophylaxis protocols are lacking.
- This study investigates coagulation profiles in peripheral artery disease (PAD) patients undergoing DVA to inform thromboprophylaxis strategies.
Purpose of the Study:
- To evaluate coagulation profiles in PAD patients after DVA using thromboelastography.
- To assess the impact of different postprocedure thromboprophylaxis regimens on coagulation.
- To identify optimal thromboprophylaxis for DVA procedures.
Main Methods:
- Prospective evaluation of patients over 60 years old undergoing DVA.
- Thromboelastography (TEG) performed at baseline and at 1, 3, and 6 months post-procedure.
- Comparison of four thromboprophylaxis regimens: mono antiplatelet therapy (MAPT), MAPT + direct oral anticoagulant (DOAC), dual antiplatelet therapy (DAPT), and DAPT + DOAC.
Main Results:
- The DAPT + DOAC group exhibited significantly superior platelet inhibition, indicated by lower adenosine diphosphate maximum amplitude values across all time points.
- Mono antiplatelet therapy (MAPT) was associated with slower clot strengthening, as evidenced by lower citrated kaolin angle values.
- Patients in the study predominantly had comorbidities like hypertension, hyperlipidemia, and diabetes.
Conclusions:
- Thromboelastography with platelet mapping highlights the effectiveness of DAPT + DOAC in enhancing platelet inhibition and reducing clot formation post-DVA.
- These findings underscore the critical importance of individualized coagulation monitoring and tailored thromboprophylaxis regimens in DVA procedures.
- Further research is warranted to establish definitive thromboprophylaxis guidelines for DVA.
