Assessment of Thrombotic Status in Patients at Risk of Cardiovascular Thrombosis
2019年2月6日 更新者：Prof Diana Gorog、East and North Hertfordshire NHS Trust
Patients with coronary artery disease (CAD) and atrial fibrillation (AF) are at increased risk of stroke and heart attack.
Such events are usually caused by increased stickiness of the blood causing a blood clot to block the artery (thrombus) in the heart or the brain.
The aim of this study is to assess the stickiness of the blood (global thrombotic status) in patients with CAD and AF at baseline and after clinical stabilisation to see how disease state and clinical treatments affect the stickiness of the blood (thrombotic status).
This will be a single centre study.
Patients diagnosed with CAD or AF will have a blood sample taken at baseline and after clinical stabilisation.
Blood stickiness will be tested with the Global Thrombosis Test.
The results will be evaluated to assess the effect of disease process and clinical state on blood stickiness to gain further understanding of this condition and form the basis for future studies aimed at identifying patients who are at high risk of future cardiovascular events, based on increased blood stickiness.
研究概览
详细说明
Impaired thrombotic status is associated with adverse cardiovascular events. Patients with coronary artery disease (CAD) and atrial fibrillation (AF) are at increased risk of thrombotic events. It is not known whether thrombotic status differs in these patients, or how thrombotic status alters in response to clinical stabilisation with treatment.
The aim of this study is to assess the global thrombotic status (stickiness of the blood) in patients with coronary artery disease and atrial fibrillation at baseline and after clinical stabilisation.
This is a small, pilot, hypothesis-generating study. Design Single centre, hypothesis-generating study. Patients diagnosed with coronary disease (n=70) or atrial fibrillation (n=70) recruited from amongst in-patients or out-patients, will have a blood draw at presentation and after clinical stabilisation. Blood will be tested to assess global thrombotic status.
The recruitment period is 3 years.
研究类型
观察性的
注册 (实际的)
140
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
-
-
Herts
-
Stevenage、Herts、英国、SG1 4AB
- East & North Herts NHS Trust (Queen Elizabeth II Hospital, Howlands, Welwyn Garden City, AL7 4HQ and Lister Hospital, Coreys Mill Lane, Stevenage, Herts , SG1 4AB -those two hospitals operate as one institution
-
-
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 及以上 (成人、年长者)
接受健康志愿者
不
有资格学习的性别
全部
取样方法
概率样本
研究人群
Patients diagnosed with coronary disease or atrial fibrillation.
Participants will be recruited from amongst in-patients or out-patients
描述
Inclusion Criteria:
- Male and female participants aged 18 years or over.
- Patients diagnosed with CAD or AF and free of exclusion criteria below.
- Not actively using tobacco products (due to vasoactive and pro-aggregatory effects of nicotine).
- The participant is willing and able to understand the Subject Information Sheet and provide informed consent.
- The participant must agree to comply with the drawing of blood samples for the assessments.
Exclusion Criteria:
- Male and female participants aged < 18 years of age.
- Patients with impaired renal function eGFR <30 ml/min (since renal failure is associated with platelet function defect that may confound results).
- The participant has, in the opinion of the investigator, significant neurological, hepatic, renal, endocrine, cardiovascular, gastrointestinal, pulmonary, haemorrhagic metabolic or other disease likely to confound the study requirements or analyses.
- The participant has a gives a history of substance abuse or demonstrates signs or clinical features of active substance abuse or psychiatric disease.
- Alcohol consumption above recommended safe levels (i.e. more than 21 units per week for males, or more than 14 units per week for females) due to the potential effects of high alcohol levels on platelet reactivity.
- Any illness deemed significant by the investigator during the four (4) weeks preceding the screening period of the study.
- Any major bleeding diathesis or blood dyscrasia (platelets < 70 x 109/l, Hb <8 g/dl, INR>1.4, APTT> x 2UNL, leucocyte count< 3.5x 109/l, neutrophil count < 1x 109/l)
- Currently enrolled in an investigational device or drug trial.
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
|
Patients
Patients diagnosed with coronary disease or atrial fibrillation.
All the patients will undergo Global Thrombosis Test.
|
Patients will undergo the tests of thrombosis, before and after stabilisation of their cardiac condition.
Cardiac stabilisation will be provided by clinical cardiac teams, outside and independently from the study.
|
研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
The occlusion and lysis time.
大体时间：1-3 months
|
The occlusion and lysis timet.
|
1-3 months
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
no secondary outcome measures to be identified
大体时间：no secondary outcome measures to be identified
|
no secondary outcome measures to be identified
|
no secondary outcome measures to be identified
|
其他结果措施
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
no other outcome measures to be identified
大体时间：no other outcome measures to be identified
|
no other outcome measures to be identified
|
no other outcome measures to be identified
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员：Diana A Gorog, Prof、East & North Herts NHS Trust
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2013年1月1日
初级完成 (实际的)
2018年9月1日
研究完成 (实际的)
2018年9月1日
研究注册日期
首次提交
2014年2月25日
首先提交符合 QC 标准的
2014年2月25日
首次发布 (估计)
2014年2月27日
研究记录更新
最后更新发布 (实际的)
2019年2月8日
上次提交的符合 QC 标准的更新
2019年2月6日
最后验证
2019年2月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.