The Influence of day-to Day BPV on Long-term Adverse Outcomes in Patients Ischemic Stroke

Study Overview
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Brief Summary
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Stroke is one of the most devastating disorder worldwide. Hypertension has been confirmed to be a major modifiable risk factor for stroke.Even the casual visit hypertension has been managed ideally,there is still surplus risk for stroke re-attack.The purpose of this study is to explore whether variation of 24-hour ambulatory and visit-to-visit blood pressure variability (BPV) contribute to recurrent stroke.

Detailed Description
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System hypertension has been reported to play the most important role in the development of stroke,and the anti-hypertension therapy is regarded as the cornerstone for stroke secondary prevention. However, even though some proper measures have been taken,there is still surplus risk for recurrent stroke. Recently the variation of system blood pressure has been focused as the candidate of another risk factor.Up to date,this hypothesis remains an intense debate and few studies has been done to clarify it.Besides, the definition of BPV and measurement of BPV parameters are still beyond conformity.In the current study, the long-term and short-term BPV will be taken respectively for patients with prior stroke. Bsed on these parameters, the cohort will be followed up for average 2 years. The predefined outcome include composite cardiovascular events, neuropsychiatric wording, and mortality during followup.

Official Title
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Evaluating the Influence of Day-to-day Blood Pressure Variation in Acute Ischemic Stroke on Adverse Outcomes in Long-term Post-stroke Followup

Conditions
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Stroke

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - Exclusion Criteria: comorbidity of dementia ( including AD, PDD, FTLD, VaD and so on ) coexisting severe systematic diseases on admission such as acute coronary syndrome, malignant tumor, plasma dialysis therapy for renal failure, cirrhosis, rheumatic disease that would influence mortality. discharge with severe sequelae with mRS>5

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| non-hypertension with lower BPV<br>patients meeting to flowing two criteria: 1. mean SBP<140 mmHg; 2. Systolic blood pressure-coefficient variation (SBP-CV) < Median SBP-CV | |
| non-hypertension with higher BPV<br>patients meeting to flowing two criteria: 1. mean SBP< 140 mmHg; 2. SBP-CV > Median SBP-CV | |
| hypertension with lower BPV<br>patients meeting to flowing two criteria: 1. mean SBP> 140 mmHg; 2. SBP-CV < Median SBP-CV | |
| hypertension with higher BPV<br>patients meeting to flowing two criteria: 1. mean SBP> 140 mmHg; 2. SBP-CV > Median SBP-CV | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| mortality | all cause death | 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| macrovascular events | stroke, including recurrent ischemic stroke and intra-cerebral hemorrhage, coronary artery events and peripheral artery occlusion | 12 months | 
| microvascular events | cognition and psychological decline | 12 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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stroke, blood pressure, prognosis