Tranexamic Acid During Cystectomy Trial (TACT)
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 354
- 试验地点
- 10
- 主要终点
- proportion of patients transfused at least one unit of packed red blood cell transfusion
研究概览
简要总结
A cystectomy is the removal of the bladder and adjacent organs in patients with bladder cancer. This often results in significant blood loss, and about 60% of patients will require a blood transfusion during or up to 30 days after surgery. Significant blood loss may result in cardiovascular morbidity, and the use of blood products are expensive and expose patients to risk.
Tranexamic acid reduces breakdown of hemostatic blood clots and it has therapeutic benefit when used in other surgical procedures to reduce blood loss and the need for transfusion. The current study will be the first to evaluate whether tranexamic acid is effective and safe to use during radical cystectomy. The results of the study will have an immediate impact on patient care.
详细描述
Removal of the bladder and adjacent organs in patients with bladder cancer (radical cystectomy) often results in significant blood loss, and approximately 60% of patients require peri-operative blood transfusion. Reducing blood loss and the frequency of transfusion offers several benefits, including donor blood conservation, health care cost reduction, and avoidance of blood product exposure. Tranexamic acid is an amino acid lysine derivative with strong antifibrinolytic clotting properties that can be administered systemically. This medication has been used in a variety of operative procedures, notably in high risk cardiac surgery, to decrease peri-operative blood loss, and it is associated with an acceptable risk of adverse events. Systemic anti-hemorrhagics are infrequently used during radical cystectomy, and to the investigators knowledge their effects have not been evaluated in a clinical trial.
Overall objective: To conduct a randomized controlled trial of systemic tranexamic acid compared to placebo in reducing the number of blood transfusions in patients undergoing radical cystectomy for bladder cancer.
Design: A multi-center, randomized, double-blinded, placebo controlled trial.
Study population: Consenting patients 18 years of age and older undergoing a radical cystectomy for bladder cancer, excluding those who: are unwilling to receive blood products due to personal reasons, are pregnant, have active angina, have a known allergy to tranexamic acid, or have a known personal history of deep venous thrombosis, atrial fibrillation, coronary stent, sub-arachnoid hemorrhage, pulmonary embolism, thrombotic stroke and / or acquired disturbance of colour vision. The study will recruit 354 patients from Dalhousie University, McGill University, Université de Montreal, Université Laval, University of Ottawa, University of Western Ontario and University of Alberta.
Intervention:
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
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Participant ≥ 18 years at time of consent
- •Participant has bladder cancer and will undergo radical cystectomy to remove bladder
- •Participant is willing to receive blood products (i.e. packed red blood cells, platelets, plasma)
- •Have obtained Informed Consent
排除标准
- •Participant declines consent
- •Participants incapable (incompetent) of providing Informed Consent
- •Participant is under 18 years
- •Participant is unwilling to receive blood products due to personal reasons
- •Participant has thromboembolic disease (active or diagnosed within 1 year) such as deep vein thrombosis, pulmonary embolism or cerebral thrombosis)
- •Participant with known personal history of subarachnoid haemorrhage.
- •Participant has acquired disturbances to his / her colour vision (does not apply to congenital colour blindness)
- •Participant is pregnant (confirmed by βHCG test)
- •Participant has a known allergy to tranexamic acid
研究组 & 干预措施
Tranexamic Acid
Tranexamic acid will be administered as an intravenous infusion of 10 mg/kg over 10 minutes (loading dose) prior to surgical incision, followed by 5 mg/kg/hour continuous maintenance infusion for the length of surgery (typically 4 to 8 hours). For example, an 80 kg patient would receive 800 mg prior to incision and a 400 mg/hr infusion for the duration of surgery. For a 6 hour procedure, the total dose administered would be 3200 mg.
干预措施: Tranexamic Acid (Drug)
Placebo control
As there is no standard of care concerning administration of anti-fibrinolytic agents in cystectomy procedures, controls will follow the same dosing and schedule as above (loading dose followed by maintenance infusion), but with 0.9% sodium chloride.
干预措施: Placebo (Drug)
结局指标
主要结局
proportion of patients transfused at least one unit of packed red blood cell transfusion
时间窗: up to 30 days post-operative
次要结局
- occurrence of plasma transfusion(up to 30 days post-operative)
- estimated intra-operative blood loss(up to 30 days post-operative)
- occurrence of platelet transfusion(up to 30 days post-operative)
- total units of platelets transfused(up to 30 days post-operative)
- total units of red blood cells transfused(up to 30 days post-operative)
- occurrence of postoperative bleeding requiring intervention(up to 30 days post-operative)
- total units of plasma transfused(up to 30 days post-operative)
- change in hemoglobin(up to 30 days post-operative)