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Related Concept Videos

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...
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...
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,...
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: Continuous Renal Replacement Therapy01:26

Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy

Continuous Renal Replacement Therapy (CRRT) is an essential intervention for patients experiencing severe kidney dysfunction. This therapy offers a continuous mechanism for removing fluids and toxins from the bloodstream, leveraging the patient’s blood pressure to facilitate filtration through a specialized filter. This method contrasts with intermittent dialysis, providing a gentler and more consistent removal of waste products and excess fluid, which is particularly beneficial in critically...
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...

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Related Experiment Video

Updated: Jun 16, 2026

An Open-Source Normothermic Perfusion System Designed for Research Scientists
11:23

An Open-Source Normothermic Perfusion System Designed for Research Scientists

Published on: July 18, 2025

Haemodiafiltration-optimal efficiency and safety.

Ingrid Ledebo1, Peter J Blankestijn

  • 1Gambro Research and Development , Lund , Sweden.

NDT Plus
|January 22, 2010
PubMed
Summary
This summary is machine-generated.

Haemodiafiltration (HDF) offers superior removal of uraemic solutes by combining diffusion and convection. Optimizing HDF therapy involves understanding its numerous interacting parameters for enhanced patient outcomes.

Related Experiment Videos

Last Updated: Jun 16, 2026

An Open-Source Normothermic Perfusion System Designed for Research Scientists
11:23

An Open-Source Normothermic Perfusion System Designed for Research Scientists

Published on: July 18, 2025

Area of Science:

  • Nephrology
  • Renal Replacement Therapy
  • Biomedical Engineering

Background:

  • Haemodiafiltration (HDF) is a preferred blood purification therapy for enhanced uraemic solute removal.
  • HDF integrates diffusive and convective solute transport, presenting complex interactions among its numerous variables.
  • Optimizing HDF requires a thorough understanding of these interacting parameters.

Purpose of the Study:

  • To review the parameters determining HDF efficiency.
  • To discuss the control of these parameters in current HDF and 'HDF-like' therapies.
  • To highlight the conditions for safe and effective HDF, focusing on fluid quality.

Main Methods:

  • Literature review of HDF parameters and their control.
  • Discussion of on-line preparation of sterile substitution solutions from ultrapure dialysis fluid.
  • Analysis of solute transport mechanisms in HDF.

Main Results:

  • HDF achieves significant removal of uraemic solutes beyond small molecules.
  • On-line HDF, utilizing ultrapure dialysis fluid, enables sterile, non-pyrogenic substitution solution preparation.
  • High-flux membranes and ultrapure dialysis fluid facilitate broad solute removal in on-line HDF.

Conclusions:

  • On-line HDF provides the most extensive solute removal among dialysis therapies.
  • The clinical benefits of on-line HDF are attainable with current technology.
  • Access to large volumes of high-quality fluids is crucial for safe and effective HDF.