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Related Concept Videos

Hemodialysis I: Introduction01:25

Hemodialysis I: Introduction

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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...
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Hemodialysis II: Procedure and Complications01:24

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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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Hemodialysis III: Nursing Management01:25

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The nursing management of a patient undergoing hemodialysis includes several critical steps, starting with a thorough assessment before the procedure.Before the Hemodialysis ProcedureFirst, record the patient's vital signs—blood pressure, heart rate, respiratory rate, and temperature—to establish a baseline. This baseline is essential for detecting conditions such as hypotension that could impact the patient's response to dialysis. Document the patient's pre-dialysis weight, as this...
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Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis01:30

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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...
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Continuous Renal Replacement Therapy01:30

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Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
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Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy01:26

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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...
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Related Experiment Video

Updated: Mar 24, 2026

Insertion, Maintenance, and Removal of the Percutaneous Dual Lumen Cannula Right Ventricular Assist Device
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Plastic cannula use in hemodialysis access.

Vicki Smith1, Monica Schoch2

  • 1Barwon Health Renal Department, Geelong, Victoria - Australia.

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Plastic cannulas show promise for improving first-time arteriovenous fistula (AVF) cannulation in hemodialysis patients. Initial data suggests increased success rates and fewer complications with this new technique.

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Area of Science:

  • Nephrology
  • Vascular Access
  • Dialysis Technology

Background:

  • Successful cannulation of arteriovenous fistulas (AVFs) or grafts (AVGs) is crucial for hemodialysis.
  • Metal needles have been standard for over 50 years; plastic cannulas are a new introduction.

Purpose of the Study:

  • To evaluate if plastic cannulas reduce miscannulations and adverse events during initial AVF cannulation.
  • Assessing the impact of plastic cannula implementation on patient outcomes.

Main Methods:

  • Comprehensive staff training in plastic cannula insertion techniques.
  • Implementation of a new cannulation protocol for AVFs within the first two weeks of dialysis.

Main Results:

  • Training delays occurred, but initial results are positive.
  • Statewide AVF use at first dialysis increased from 50% (2013) to 78% (2015).
  • Higher success rates with plastic cannulas in AVF-only patients (67%) compared to those with CVC alternatives (24%).

Conclusions:

  • Plastic cannulas represent an innovative approach to AVF cannulation.
  • With adequate training and expertise, plastic cannulas can facilitate successful cannulation programs for new hemodialysis patients.