The BERN Ultrasound-enhanced Thrombolysis for Ilio-Femoral Deep Vein Thrombosis versUs Standard Catheter Directed thromboLysis Trial (BERNUTIFUL-Trial)
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 48
- 试验地点
- 2
- 主要终点
- Improvement of Total EKOS Thrombus Score, a specifically developed venographic scoring system
研究概览
简要总结
Patients with deep vein thrombosis (DVT) of the ilio-femoral veins have increased risk for developing post-thrombotic syndrome (PTS) and recurrent venous thromboembolism compared to more distal DVT. There's evidence that the early removal of the obstructing thrombus by catheter directed thrombolysis (CDT) reduces the risk of developing a PTS, and a higher degree of thrombolysis is associated with lower incidence of PTS, better quality of life and lower risk of recurrent venous thromboembolism. A further development is ultrasound-enhanced thrombolysis combining CDT with a sophisticated catheter system that employs high-frequency, low-dose ultrasound. In vitro experiments showed that adding ultrasound to thrombolytic drugs accelerates thrombolysis while Ultrasound exposure alone results in no thrombolysis, however the superiority of ultrasound-enhanced thrombolysis over standard CDT has never been formally assessed in vivo. The hypothesis for this study is that ultrasound-enhanced thrombolysis reaches a higher degree of thrombolysis than standard CDT in patients with symptomatic ilio-femoral DVT.
详细描述
Background
Deep vein thrombosis (DVT) is a public health problem with an annual incidence of 1 per 1000. Besides the acute risk of potentially fatal pulmonary embolism or phlegmasia cerulea dolens, these patients are at increased risk of recurrent venous thromboembolism, and in the long term 20-40% of them develop a post-thrombotic syndrome (PTS). PTS mainly develops in patients with DVT affecting the ilio-femoral veins, adversely affects the quality of life and causes important health care costs to the society. There's evidence that the early removal of the obstructing thrombus reduces the risk of developing a PTS, and a higher degree of thrombolysis is associated with lower incidence of PTS, better quality of life and lower risk of recurrent venous thromboembolism. Therefore, in addition to standard anticoagulation therapy, the latest international guidelines recommend catheter-directed thrombolysis (CDT) as first-line treatment for patients with ilio-femoral DVT and low bleeding risk. CDT refers to the infusion of thrombolytic drugs directly into the thrombus via a multisidehole catheter which is embedded in the thrombus using imaging guidance. A further development is ultrasound-enhanced thrombolysis combining CDT with a sophisticated catheter system that employs high-frequency, low-dose ultrasound. In vitro experiments showed that adding Ultrasound to thrombolytic drugs accelerates thrombolysis while Ultrasound exposure alone results in no thrombolysis. Although ultrasound-enhanced thrombolysis is now widely used to treat ilio-femoral DVT or high-risk pulmonary embolism, it is currently not known if this technique is superior to standard CDT.
Objective
To determine if the addition of intravascular high-frequency/low-dose ultrasound to standard CDT increases the percentage of clot lysis compared to CDT alone after treatment duration of 15 hours in patients with symptomatic ilio-femoral DVT and low bleeding risk
Methods
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 75 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Symptomatic proximal DVT involving the iliac and/or common femoral vein, confirmed by Duplex Sonography, Angio-CT, Angio-MRI or Phlebography
- •Written informed consent
- •Exclusion Criteria
- •Age less than 18 years or greater than 75 years
- •Symptom duration > 14 days for the DVT episode in the index leg (i.e., non-acute DVT).
- •In the index leg: established post-thrombotic syndrome (PTS) or previous symptomatic DVT within the last 2 years.
- •Limb-threatening circulatory compromise.
- •PE with hemodynamic compromise (i.e., hypotension).
- •Inability to tolerate catheter procedure due to severe dyspnea or acute systemic illness.
- •Allergy, hypersensitivity, or thrombocytopenia from heparin, r-tPA, or iodinated contrast, except for mild-moderate contrast allergies for which steroid pre-medication can be used.
- •Known significant bleeding risk, or known coagulation disorder (including vitamin K antagonists with INR > 2.0 and platelet count < 100 000/mm3)
- •Severe renal impairment (estimated GFR < 30 ml/min).
- •Active bleeding, recent (< 3 mo) GI bleeding, severe liver dysfunction, bleeding diathesis.
- •Recent (< 3 mo) internal eye surgery or hemorrhagic retinopathy; recent (< 10 days) major surgery, cataract surgery, trauma, CPR, obstetrical delivery, or other invasive procedure.
- •History of stroke or intracranial/intraspinal bleed, tumor, vascular malformation, aneurysm.
- •Severe hypertension on repeated readings (systolic > 180 mmHg or diastolic > 105 mmHg).
- •Pregnant, lactation or parturition within the previous 30 days (positive pregnancy test, women of childbearing age must be tested or use a medically accepted method of birth control).
- •Recently (< 1 mo) had thrombolysis.
- •Life expectancy < 6 months or chronic non-ambulatory status.
- •Participating in any other investigational drug or device study or previous enrollment in this study
- •Inability to provide informed consent or to comply with study assessments (e.g. due to cognitive impairment or geographic distance).
- •Any other condition that the investigator feels would place the patient at increased risk if the investigational therapy is initiated
排除标准
- 未提供
结局指标
主要结局
Improvement of Total EKOS Thrombus Score, a specifically developed venographic scoring system
时间窗: After 15 hours of CDT
次要结局
- Improvement of the "Venous Registry Index" venographic scoring system(After 15 hours of CDT)
- Early symptom relief assessed by standardized limb circumference measurements and validated visual analogue pain scale(During and after 15 hours of CDT)
- Treatment related complications(30 days)
- Development of PTS assessed by Villalta scale and Quality of life (CIVIQ)(After 12 months)
- Venous valve patency/insufficiency assessed by duplex sonography(After 12 months)