Preservation of Venous Valve Function after Catheter-Directed and Systemic Thrombolysis for Deep Venous Thrombosis
ABSTRACT The aim of the study was to assess venous reflux and the obstruction pattern after catheter-directed and systemic thrombolysis of deep iliofemoral venous thrombosis.
Thirty-two patients treated either with systemic (16) or catheter-directed local thrombolysis (16) for massive iliofemoral thrombosis were identified from the hospital registry.
Clinical evaluation at follow up was based on the CEAP classification and disability score. Reflux was assessed by colour duplex ultrasonography and standardised reflux testing. A vascular surgeon blinded to treatment established the clinical status of the lower limb following the previous DVT.
Valvular competence was preserved in 44% of patients treated with catheter-directed thrombolysis compared with 13% of those treated with systemic thrombolysis (p=0.049, Chi squared). Reflux in any deep vein was present in 44% of patients treated by catheter-directed lysis compared with 81% of patients receiving systemic thrombolysis (p=0.03, Chi squared). Reflux in any superficial vein was observed in 25% vs. 63% of the patients, respectively (p=0.03, Chi squared). There were significantly more patients with venous insufficiency of classes C0-1 in the group treated with catheter-directed thrombolysis.
In this clinical series venous valvular function was better preserved after iliofemoral DVT when treated with catheter-directed thrombolysis.
Conference Paper: Dependency analysis tools: reusable components for software maintenance[Show abstract] [Hide abstract]
ABSTRACT: A general-purpose toolset that is being developed to capture and analyze software dependencies is described. The tools are designed to serve as reusable components. They can be used not only to aid programmers directly in understanding programs but also as a basis from which other specialized tools can be constructed. The tools use the concept of a dependency graph as a basic abstraction to simplify the understanding of software relationships. Definitional, calling, functional and data-flow dependencies are analyzed. An external dependency graph for each function is developed to encapsulate the effects of function cellsSoftware Maintenance, 1989., Proceedings., Conference on; 11/1989
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ABSTRACT: Creating enhanced learning environments based on the opportunities offered by the Internet has become a hotly debated topic among educators. It is certainly true that many educational research and ICT projects have reported a variety of outcomes and lessons learned with regard to these powerful new media and how teachers can effectively integrate technology into learning and teaching, but there has been little public debate about the nature of these opportunities or how they might most effectively be introduced.