A case for cellulosic membrane hemodialyzers

P Ivanovich1, K Rosner

  • 1Department of Medicine, VA Chicago Health Care System, Lake Side Division, and Northwestern University Medical School, Illinois 60611, USA.

Seminars in Dialysis
|December 29, 2000
PubMed

Insights

Regenerated cellulose membranes in dialysis may not cause ill effects as previously thought. Some adverse events are likely due to ethylene oxide, and these membranes offer cost-effective dialysis therapy.

Area of Science:

  • Biomaterials Science
  • Nephrology
  • Medical Device Technology

Background:

  • Regenerated cellulose membranes are utilized in hemodialysis.
  • Concerns exist regarding potential adverse effects in dialysis patients linked to these membranes.

Purpose of the Study:

  • To evaluate the actual impact of regenerated cellulose membranes on patient health during dialysis.
  • To differentiate between membrane-specific effects and those caused by sterilization agents like ethylene oxide.

Main Methods:

  • Review of existing studies and clinical data concerning regenerated cellulose membranes in dialysis.
  • Analysis of reported patient outcomes, including hypotension and changes in well-being.
  • Investigation into the role of ethylene oxide as a confounding factor.

Main Results:

  • Evidence supporting direct adverse effects of regenerated cellulose membranes is limited.
  • Hypotension and altered well-being in some patients may be attributable to ethylene oxide residuals.
  • Regenerated cellulose membranes offer a lower-cost alternative for dialysis.

Conclusions:

  • Regenerated cellulose membranes may be a safe and cost-effective option for dialysis.
  • Ethylene oxide sterilization requires careful consideration in dialysis device manufacturing.
  • Lower-cost dialyzers can expand access to life-saving renal replacement therapy globally.

Related Concept Videos

Dialysis01:15

Dialysis

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...
Dialysis01:27

Dialysis

Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Hemodialysis II: Procedure and Complications01:24

Hemodialysis II: Procedure and Complications

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,...
Hemodialysis I: Introduction01:25

Hemodialysis I: Introduction

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

Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis

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...
Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration01:25

Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration

Hemoperfusion and hemofiltration are critical techniques in medical treatments to eliminate accumulated drugs, metabolites, and electrolytes from the bloodstream. These methods are particularly vital in cases of accidental poisoning and drug overdose.Hemoperfusion involves passing blood through an adsorbent material to remove unwanted substances. The main adsorbents used in hemoperfusion include activated charcoal and Amberlite resins. Activated charcoal can adsorb both polar and nonpolar...