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DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
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Hemorheologic alterations in peritoneal dialysis.

Francesco Fontana1, Marco Ballestri2, Clarisse Makomi1

  • 1Surgical, Medical and Dental Department of Morphological Sciences, Section of Nephrology, University of Modena and Reggio Emilia, Modena, Italy.

Clinical Hemorheology and Microcirculation
|June 25, 2016
PubMed
Summary
This summary is machine-generated.

Peritoneal dialysis (PD) patients exhibit altered hemorheology, with improved macrocirculation but impaired microcirculation and erythrocyte deformability compared to hemodialysis (HD) patients. These changes may increase cardiovascular and peritoneal membrane risks.

Keywords:
Erythrocyte deformabilityHemorheologyPeritoneal dialysis

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Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Hemodynamics

Background:

  • Dialysis patients face elevated cardiovascular risk from traditional and non-traditional factors.
  • Hemorheologic alterations are known in hemodialysis (HD) but understudied in peritoneal dialysis (PD).

Purpose of the Study:

  • To characterize the hemorheological profile of PD patients.
  • To compare PD hemorheology with HD patients and healthy volunteers.

Main Methods:

  • Study included 49 PD patients.
  • Hemodynamic parameters were measured and compared across PD, HD, and control groups.

Main Results:

  • PD patients showed better macrocirculatory parameters (plasma viscosity, whole blood viscosity at 1 Hz, erythrocyte aggregation, yield stress) than HD patients.
  • PD patients had severely impaired microcirculatory function, indicated by high whole blood viscosity at 200 Hz and reduced erythrocyte deformability (ED).

Conclusions:

  • PD patients exhibit distinct hemorheologic alterations compared to HD patients.
  • Impaired microcirculation and reduced ED in PD may increase risks for atherosclerosis, cardiovascular events, and peritoneal membrane dysfunction.