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Published on: October 2, 2020
Hypertension in hemodialysis patients
1Operative Unit of Nephrology and Dialysis, Department of Nephrology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy.
Insights
Hypertension significantly increases cardiovascular risk in hemodialysis patients due to numerous risk factors. Newer blood pressure monitoring methods may help reduce this risk.
Area of Science:
- Nephrology
- Cardiology
- Hypertension Research
Background:
- Hypertension is a major contributor to cardiovascular disease (CVD) in hemodialysis (HD) patients.
- Chronic kidney disease (CKD) patients face a high burden of traditional and non-traditional CVD risk factors.
- Underutilization of potentially beneficial therapies is common in end-stage renal disease (ESRD).
Purpose of the Study:
- To review the epidemiology of hypertension in dialysis patients.
- To explore the pathogenetic mechanisms of elevated blood pressure in this population.
- To outline relevant traditional and non-traditional cardiovascular risk factors.
Main Methods:
- Review of recent studies on home blood pressure (BP) and 24-hour ambulatory BP monitoring (ABPM).
- Analysis of data correlating home BP readings with ABPM.
- Synthesis of existing literature on CVD risk factors in dialysis patients.
Main Results:
- Newer BP monitoring techniques, including home BP and ABPM, offer a narrower BP range for reducing CV risk.
- Home BP measurements on interdialytic days are practical and correlate well with ambulatory readings.
- Understanding BP overload mechanisms is crucial for managing CV risk.
Conclusions:
- Hypertension in dialysis patients is complex, driven by multiple risk factors.
- Ambulatory blood pressure monitoring and home BP monitoring are valuable tools for hypertension management in CKD.
- Further research and optimized therapies are needed to mitigate high cardiovascular risk in hemodialysis patients.
Abstract:
Hypertension confers higher cardiovascular (CV) risk in hemodialysis (HD) patients, perhaps because patients with CKD have a high burden of traditional cardiovascular risk factors in addition to a range of non-traditional risk factors such as anemia, left ventricular hypertrophy, inflammation and abnormal metabolism of calcium and phosphate. Potentially beneficial therapies are sometime under used in patients with end stage renal disease and are rarely studied in patients on dialysis. Newer studies using home BP and ambulatory BP during 24 hours have provided a narrower range of BP values that may reduce CV risk. Ambulatory blood pressure (BP) monitoring is a growing tool for hypertension evaluation along with changes in vascular compliance. Home BP values on interdialytic days are practical and also demonstrate good correlations with ambulatory readings. In this review, we describe the epidemiology, the pathogenetic mechanisms that underlie blood pressure over load in dialysis patients and outline traditional and non traditional cardiovascular risk factors that are relevant in this population.
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