Association of Synchronous Four-limb blOod pRessure and Pulse Wave velocIty With Cardiovascular Events

Study Overview
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Brief Summary
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A multicenter prospective registry planned to recruit more than 100 000 patients 50 years old and older was carried out in China. This primary purpose of this study was to evaluate the association of synchronous four-limb blood pressure and pulse wave velocity with cardiovascular events. The secondary purpose was to evaluate the incidence rate,prevalence rate, value of diagnosis for peripheral arterial occlusive disease, and to follow up the effects of revascularization on cardiovascular events.

Detailed Description
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Although many studies with the correlation between synchronous four-limb blood pressure and pulse velocity measurement and cardiovascular outcomes have existed currently, the sample sizes are relatively small and the data on Chinese populations are lacking.Therefore, a multicenter prospective registry planned to recruit more than 100 000 patients aged 50 years old and older was carried out in China. This primary purpose of this study was to evaluate the association of synchronous four-limb blood pressure and pulse wave velocity with cardiovascular events in chinese populations. The secondary purpose was to evaluate the incidence rate,prevalence rate, value of diagnosis for peripheral arterial occlusive disease, and to follow up the effects of revascularization on cardiovascular events.

Official Title
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A National Registry for the Association of Synchronous Four-limb Blood Pressure and Pulse Wave Velocity With Cardiovascular Events in China

Conditions
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Blood Pressure, Pulse Wave Analysis, Ankle Brachial Index, Patient Outcome Assessment

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 50 years old at the time of informed consent Chinese populations in hospital, community and physical examination center Exclusion Criteria: Patients with lack of limb,malformation of limbs, severe limb trauma or infection. Serious organic disease affecting the quality of life, such as tumors, massive cerebral infarction, uremia, and etc.

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of cardiovascular events (cardiovascular death,myocardial infarction, heart failure, stroke, renal failure, aortic dissection) |  | From date of enrollment until the date of first documented cardiovascular events or date of death from any cause, whichever came first, assessed up to 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of cardiovascular events (cardiovascular death,myocardial infarction, heart failure, stroke, renal failure, aortic dissection) |  | Measured at 6 months, 24 months and every 12 months thereafter from date of enrollment until the date of first documented cardiovascular events or date of death from any cause, whichever came first, assessed up to 60 months | 
| Incidence of death from any cause |  | Measured at 6 months, 12 months and every 12 months thereafter from date of enrollment until the date of first documented death from any cause, assessed up to 60 months | 
| Incidence of peripheral arterial disease |  | Measured at 6 months, 12 months and every 12 months thereafter from date of enrollment until the date of first documented four-limb peripheral arterial disease or date of death from any cause, whichever came first, assessed up to 60 months | 
| Incidence of limb gangrene |  | Measured at 6 months, 12 months and every 12 months thereafter from date of enrollment until the date of first documented gangrene caused by peripheral arterial disease or date of death from any cause,whichever came first, assessed up to 60 months | 
| Incidence of amputation |  | Measured at 6 months, 12 months and every 12 months thereafter from date of enrollment until the date of first documented amputation caused by peripheral arterial disease or date of death from any cause, whichever came first, assessed up to 60 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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blood pressure, pulse wave velocity, ankle brachial index, cardiovascular events