此页面是自动翻译的,不保证翻译的准确性。请参阅 英文版 对于源文本。

Targeting Microvascular Dysfunction in Young Hypertensive Patients

2019年7月1日 更新者:Gary E McVeigh、Queen's University, Belfast
Cholesterol and blood pressure lowering tablets have been shown to be of benefit in patients with established high blood pressure. High blood pressure is a very common medical condition that can lead to vascular complications i.e. problems with the blood vessels in the body. One way of detecting early changes in these blood vessels as a result of high blood pressure is to measure their compliance/flexibility with a noninvasive technique known as ultrasound and with a simple blood test. The investigators are trying to establish whether these early changes in blood vessels can be significantly improved by the use of both a cholesterol and blood pressure lowering tablet at an earlier stage than is currently advised. The investigators hope that the early combination of these tablets will prove more effective than the use of a blood pressure lowering tablet by itself and therefore possibly reduce the risk of long term complications developing.

研究概览

地位

撤销

条件

研究类型

介入性

阶段

  • 第四阶段

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

      • Belfast、英国、BT9 7BL
        • Belfast Health and Social Care Trust

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 至 60年 (成人)

接受健康志愿者

有资格学习的性别

全部

描述

Inclusion Criteria:

  • To be eligible for the study, all of the following criteria must be met:

    • All patients must have a diagnosis of essential hypertension with off treatment systolic pressure >140 mmHg and/or diastolic pressure >90 mmHg, measured at rest in the seated position on at least two separate occasions, at least 2 weeks apart.
    • Patients will be < 50 years for men and < 60 years for women.
    • Female patients of childbearing potential must be using a medically accepted means of contraception (that is, interuterine device, oral contraceptive, implant, DepoProvera or barrier devices). Female patients of childbearing age will be screened with a pregnancy test.
    • Patients will be typically already on antihypertensive therapy.
    • Patients must have a level of understanding sufficient to complete all tests and examinations required by the protocol and are able to understand and give informed consent.

Exclusion Criteria:

  • Patients will be excluded from the study if they meet any of the following criteria:

    • A history of diabetes mellitus, coronary artery or cerebrovascular disease, hypertensive retinopathy, hypertensive nephropathy, left ventricular hypertrophy or hyperlipidaemia warranting treatment as defined by the latest NICE guidelines which recommend an age based treatment strategy rather than one driven purely by lipid levels in isolation.
    • Abnormal baseline liver function (defined as AST or ALT > 3 times upper limit of normal), raised baseline creatinine kinase (CK) (defined as CK > 200 mmol/L), severe renal impairment (defined as estimated glomerular filtration rate (eGFR) < 30 mls/minute) or previous adverse event relating to either an ARB or statin in the past.
    • Female patients will be excluded if they are pregnant, intend to be pregnant or are lactating. Female patients of childbearing age will be screened with a pregnancy test.

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

  • 主要用途:预防
  • 分配:随机化
  • 介入模型:交叉作业
  • 屏蔽:四人间

武器和干预

参与者组/臂
干预/治疗
实验性的:Simvastatin
40mg Simvastatin once daily for 12 weeks followed by 4 week washout period followed by placebo for 12 weeks
40mg encapsulated once daily for 12 weeks
安慰剂比较:Placebo
Placebo for 12 weeks followed by 4 week washout period followed by 40mg Simvastatin once daily for 12 weeks
Encapsulated oral once daily for 12 weeks

研究衡量的是什么?

主要结果指标

结果测量
大体时间
To demonstrate a significant difference in flow-mediated dilatation of the brachial artery and microvasculature between groups.
大体时间:0, 3, 4 and 7 months
0, 3, 4 and 7 months

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:Gary E McVeigh, FRCP PhD、Queen's University, Belfast

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

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

2009年8月1日

初级完成 (预期的)

2011年8月1日

研究完成 (预期的)

2011年8月1日

研究注册日期

首次提交

2010年1月11日

首先提交符合 QC 标准的

2010年1月11日

首次发布 (估计)

2010年1月12日

研究记录更新

最后更新发布 (实际的)

2019年7月5日

上次提交的符合 QC 标准的更新

2019年7月1日

最后验证

2019年7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.

3
订阅