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University of Lynchburg DMSc Doctoral Project Assignment Repository

University of Lynchburg DMSc Doctoral Project Assignment Repository

Specialty

Emergency Medicine

Advisor

Dr. Salzer, DMSc, PA-C, NYSAFE, C-EFM

Abstract

Deep vein thrombosis (DVT) is a prevalent vascular condition frequently complicated by post-thrombotic syndrome (PTS), leading to chronic pain, edema, and diminished quality of life. Standard therapy with direct oral anticoagulants (DOACs) effectively prevents thrombus propagation, but it does not actively remove the existing clot, leaving patients at risk for PTS. This manuscript evaluates the efficacy of catheter-based thrombus removal compared to DOAC therapy alone in reducing PTS incidence and severity in patients with extensive lower-extremity DVT.

A comprehensive review of PubMed-indexed clinical trials, meta-analyses, and systematic reviews was conducted to evaluate catheter-directed thrombolysis and pharmacomechanical thrombectomy. Evidence suggests that while catheter-based interventions (CBIs) improve venous patency and reduce the severity of PTS, particularly in extensive proximal DVT, these benefits must be balanced against elevated risks of bleeding and procedural complications. Key findings indicate that clinical success depends heavily on patient selection, yielding the greatest benefit in young, functional patients with low bleeding risk and extensive clot burdens. However, the literature is currently limited by small sample sizes, heterogeneous study designs, and inconsistent definitions of extensive DVT.

Ultimately, CBIs show potential to mitigate PTS in a targeted subset of patients, but current evidence does not support routine use. Analysis of landmark trials, including ATTRACT and CAVENT, reveals mixed outcomes regarding overall PTS prevention. Future large-scale randomized trials are necessary to refine patient selection criteria and establish standardized treatment algorithms. Achieving consensus on the definition of extensive DVT and on standardized PTS measurement tools remains essential for advancing clinical guidelines.

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