Prognostic Value of Central and BracHial Ambulatory Blood Pressure Monitoring in ERSD Patients Treated With HeMOdialysis: the C-HEMO Study

The protocol of this study was approved by the local ethical review board. The including criteria: 1) ESRD treated with hemodialysis for more than 3 months prior to study enrollment; 2) agree to participate the study and sign informed written consent; 3) available for long-term follow-up. The excluding criteria: 1)chronic atrial fibrillation or other cardiac arrhythmia; 2) nonfunctional arteriovenous fistula in the contralateral brachial area of the one used for dialysis; 3) myocardial infarction, angina pectoris and ischemic stroke during the previous month; 4) congestive heart failure class IV based on the New York Heart Association classification; 5) malignancy or any other condition with poor prognosis; 6) antihypertensive treatment during one month prior to enrollment. After enrollment, every patient will receive a question-based interview to obtain medical history and the following examinations and tests: anthropometric parameters measurement including body height, weight; biochemical tests including vein blood and urine. At the first-time dialysis after enrollment, patients will receive 48-hour central and brachial ambulatory blood pressure monitoring using a well validated and commercial device Mobil-O-Graph (IEM, Germany). Brachial blood pressure are measured for each patient before every dialysis for at three month. Then one-year and three-year cardiovascular events and deaths will be followed-up. The primary outcome measures are as follows: deaths and cardiovascular events including nonfatal myocardial infarction, unstable angina, stroke, hospitalization for heart failure, or resuscitated cardiac arrest.