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Hypertension control with daily dialysis

Ehab Saad1, Bernard Charra, Dominic S C Raj

  • 1Division of Nephrology, University of New Mexico, Albuquerque, New Mexico 87131, USA.

Seminars in Dialysis
|July 15, 2004
PubMed

Insights

Frequent and prolonged hemodialysis (HD) effectively controls hypertension in end-stage renal disease (ESRD) patients. This intensive dialysis approach improves blood pressure and cardiac geometry by managing fluid volume and other factors.

Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Hypertension Management

Background:

  • Hypertension affects 60-90% of patients undergoing maintenance hemodialysis (HD), significantly contributing to cardiovascular (CV) mortality and morbidity in end-stage renal disease (ESRD).
  • Conventional HD presents challenges in achieving optimal hypertension control due to intradialytic hypotension, which hinders the attainment of dry weight.

Purpose of the Study:

  • To evaluate the efficacy of frequent and prolonged HD in managing hypertension among ESRD patients.
  • To explore the mechanisms by which intensive dialysis improves blood pressure and cardiac outcomes.

Main Methods:

  • Comparison of frequent and prolonged HD with conventional HD in ESRD patients.
  • Assessment of blood pressure control, extracellular volume normalization, and potential improvements in endothelial function and removal of pressor molecules.

Main Results:

  • Frequent and prolonged HD demonstrates superior hypertension control compared to conventional HD in ESRD patients.
  • Intensive dialysis facilitates gentle, persistent ultrafiltration, allowing intravascular refilling and extracellular volume normalization.
  • Improved blood pressure control correlates with regression of left ventricular hypertrophy and better cardiac geometry.

Conclusions:

  • Prolonged and frequent HD offers enhanced control of hypertension in ESRD patients through both volume-dependent and volume-independent mechanisms.
  • Intensive dialysis strategies positively impact cardiac geometry and may improve endothelial function, leading to better cardiovascular outcomes.

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