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Related Concept Videos

Dialysis01:15

Dialysis

931
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
931
Hemodialysis I: Introduction01:25

Hemodialysis I: Introduction

467
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
467
Hemodialysis II: Procedure and Complications01:24

Hemodialysis II: Procedure and Complications

199
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,...
199
Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis01:30

Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis

46
Patients with end-stage renal disease (ESRD) or those experiencing drug overdose often require extracorporeal methods to eliminate accumulated drugs and metabolites. Hemoperfusion, hemofiltration, and dialysis are the primary techniques to rapidly remove harmful substances without disrupting the patient's fluid and electrolyte balance. For those with compromised renal function, dosage adjustments of concurrent medications may be necessary during extracorporeal drug removal.Dialysis is a process...
46
Peritoneal Dialysis I: Introduction and Procedure01:30

Peritoneal Dialysis I: Introduction and Procedure

444
Peritoneal dialysis (PD) is a procedure that facilitates the exchange of solutes, waste products, electrolytes, and excess fluid between the blood in the peritoneal capillaries and a dialysis solution introduced into the peritoneal cavity.Principles of Peritoneal Dialysis (PD)Diffusion: Waste products such as urea and electrolytes move from high concentrations in the blood to low concentrations in the dialysate across the peritoneal membrane. This mechanism is driven by the concentration...
444
Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications01:25

Peritoneal Dialysis II: Peritoneal Dialysis Systems and Complications

159
Peritoneal dialysis (PD) is a medical process that removes waste products and excess fluid from the body using the peritoneal membrane as a natural filter.Peritoneal Dialysis MethodsSeveral methods can be used for peritoneal dialysis, including Acute Intermittent Peritoneal Dialysis, Continuous Ambulatory Peritoneal Dialysis, and Automated Peritoneal Dialysis, also known as Continuous Cyclic Peritoneal Dialysis.Acute Intermittent Peritoneal Dialysis (AIPD) is used for patients with uremic...
159

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A Retrograde Implantation Approach for Peritoneal Dialysis Catheter Placement in Mice
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Recent advances in dialysis membranes.

Bernard Canaud1,2

  • 1Global Medical Office, FMC Deutschland, Bad Homburg, Germany.

Current Opinion in Nephrology and Hypertension
|September 3, 2021
PubMed
Summary

Advancements in hemodialysis membranes aim to improve the removal of uremic solutes and reduce inflammation. New membrane technologies enhance solute clearance while maintaining protein levels, optimizing patient outcomes.

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Area of Science:

  • Biomaterials Science
  • Nephrology
  • Polymer Chemistry

Background:

  • Hemodialysis membrane technology is critical for effective solute removal and biocompatibility.
  • Existing membranes face challenges with polymer additive leaching and patient sensitization.

Purpose of the Study:

  • To enhance the removal capacity and broaden the molecular weight spectrum of cleared uremic solutes.
  • To improve the hemocompatibility of the dialysis system and prevent inflammation.

Main Methods:

  • Utilizing nanocontrolled spinning technology for membrane engineering.
  • Developing more stable polymers with advanced additives and manufacturing processes.
  • Combining diffusive and convective fluxes in hemodiafiltration.

Main Results:

  • Membrane engineering enables clearance of middle and large molecular weight substances with preserved albumin.
  • Hemodiafiltration offers superior solute removal across a wide spectrum.
  • New approaches minimize risks associated with polymer additives.

Conclusions:

  • Dialysis membranes are pivotal in optimizing hemodialysis efficacy and minimizing adverse biological reactions.
  • Hemodialyzer selection and optimized treatment conditions are essential for improved patient outcomes.
  • Continuous innovation in membrane technology is key to advancing hemodialysis therapy.