Protocol for a Multicentre Study to Investigate the Performance of the Padd Device in the Assessment of Peripheral Arterial Disease
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 发起方
- 入组人数
- 86
- 试验地点
- 2
- 主要终点
- Presence or absence of peripheral arterial disease
研究概览
简要总结
The study will compare Padd, a non-invasive automated optical device which uses a functional test to assess peripheral arterial disease (PAD), and Ankle brachial pressure index (ABPI) in the detection of PAD using as a gold standard, colour duplex ultrasound, in participants drawn from general practice, a hospital diabetic clinic and a tertiary vascular disease referral centre. The study hypothesis is that Padd performs at least as well as ABPI in detecting PAD.
详细描述
400 participants, with a minimum of 200 participants per site, will be recruited from two centres. At the Royal Free Hospital, London, the inclusion criterion is simply attendance at the vascular clinic; in Leicester patients >70 years or 50-69 years with a history of diabetes, smoking, known PAD or at least 2 risk factors (previous ischaemic event, hyperlipidaemia, hypertension, family history of cardiovascular disease) will be recruited from both primary care and the hospital diabetes clinic. The anticipated peripheral arterial disease detection rates are approximately 75% in London and 25% in Leicester.
In addition to standard questionnaires, participants will undergo bilateral Padd and resting ABPI. CDU will be performed by an accredited vascular technologist who will employ a scoring method consistent between both sites. The vascular technologist will be blind to the Padd and ABPI results. The results obtained with Padd and ABPI will be compared with CDU as the gold standard for this study.
The primary objectives are:
- Performance: to compare Padd and ABPI for detecting PAD against a gold standard, CDU, performed by an experienced vascular technologist.
- Safety: to compare adverse events using Padd, ABPI and expert CDU
The secondary objectives are:
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 50 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- •bilateral amputation that precludes placement of the Padd sensors on the feet
- •acute deep venous thrombosis, within the previous six months (application of ABPI pressure cuff on legs is not advisable for these patients)
- •skin damage or infection that precludes placement of sensors
- •active psychotic illness or severe cognitive impairment
- •inability to lie supine
结局指标
主要结局
Presence or absence of peripheral arterial disease
时间窗: 1 day
次要结局
未报告次要终点