A Randomized, Controlled Trial of Continuous Heparin Versus Placebo Infusion to Prevent Catheter-related Thrombosis in Infants After Cardiac Surgery
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 35
- 试验地点
- 1
- 主要终点
- 124 infants of CVC-related thrombosis by point-of-care echography or ultrasound
研究概览
简要总结
Catheter-related thrombosis could impair blood flow in the vein, block the central venous catheter, induce catheter-related infection or venous thromboembolism in the deep veins or pulmonary vessels, which furthermore progress into the post-thrombotic syndrome.
Researches using echogenic mass as the primary outcome could miss those premature thrombi which might not be seen on traditional ultrasonography but may be detected by Duplex and Doppler ultrasound with vessel compression. Moreover, studies indicated that some thrombus developed after the catheter removal. Removal of the catheter is not the endpoint of thrombus detection. This study is designed to determine the preventive effects of continuous heparin infusion on real-world central venous catheter-related thrombosis in infants after cardiac surgery.
详细描述
Catheter-related thrombosis could impair blood flow in the vein, block the central venous catheter, induce catheter-related infection or venous thromboembolism in the deep veins or pulmonary vessels, which furthermore progress into the post-thrombotic syndrome. Researches using echogenic mass as the primary outcome could miss those premature thrombi which might not be seen on traditional ultrasonography but may be detected by Duplex and Doppler ultrasound with vessel compression. Moreover, studies indicated that some thrombus developed after the catheter removal. Removal of the catheter is not the endpoint of thrombus detection. This study is designed to determine the preventive effects of continuous heparin infusion on real-world central venous catheter-related thrombosis in infants after cardiac surgery. One hundred and twenty-four infants were randomized to the intervention group or the control group. Unfractionated heparin or normal saline was infused continuously through each lumen of the central venous catheter at the speed of 0.5 ml/h/line until the catheter was removed. Catheter-related thrombosis was detected by point-of-care Duplex and Doppler ultrasound periodically until 30 days after the cardiac surgery or discharge, whichever comes first.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Double (Participant, Outcomes Assessor)
盲法说明
Infant participants were blinded naturally, while ultrasonographers for central venous catheter (CVC)-related thrombosis were blinded, especially after interventions were stopped.
入排标准
- 年龄范围
- — 至 3 Months（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •less than 3 months of age at admission, post-cardiac surgery, with CVC indwelled
排除标准
- •parents' refusal, requiring postoperative anticoagulant administration (extracorporeal membrane oxygenation support, prosthetic devices), the contradiction to heparin (coagulopathy or hypercoagulable state, platelet level less than 50000/dL, clinically significant bleeding tendency, allergy to heparin)
研究组 & 干预措施
Control group
Continuous infusion of heparin was used at the corresponding speed.
干预措施: Normal saline (Drug)
Heparin group
Continuous infusion of heparin was used to maintain the patency of CVC.
干预措施: Heparin sodium (Drug)
结局指标
主要结局
124 infants of CVC-related thrombosis by point-of-care echography or ultrasound
时间窗: 30 days after cardiac surgery or at discharge, whichever comes first
CVC-related thrombosis of any catheter as imaged by echocardiogram or ultrasound at 30 days after cardiac surgery. Thrombus was defined as an echogenic mass near the tip of the catheter or slow/no flow detected by Duplex and Doppler ultrasound at the nearby vessels and the on-site vessel couldn't be clasped as narrow as the collateral vessel by compression of the probe.
次要结局
- 124 infants of heparin-related comorbidity(30 days after cardiac surgery or at discharge, whichever comes first)