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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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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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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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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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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...
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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...
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Related Experiment Video

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A Murine Model of Hemodialysis Access-Related Hand Dysfunction
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[A new bone anchored hemodialysis access].

Andreas Arnold1, Anja Kruse, Simona Wiedmer

  • 11 Universitätsklinik für Hals-, Nasen- und Ohrenkrankheiten, Kopf- und Halschirurgie, Inselspital Bern.

Therapeutische Umschau. Revue Therapeutique
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Summary

A novel bone-anchored port, inspired by hearing aids, offers a potential solution for dialysis vascular access. This implant aims to reduce infections common with traditional central venous catheters.

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Area of Science:

  • Biomedical Engineering
  • Nephrology
  • Otolaryngology

Context:

  • Dialysis patients often require central venous catheters when other vascular access methods fail.
  • Conventional catheters have high infection rates due to lack of rigid fixation, leading to frequent removal.
  • Bone-anchored hearing aids demonstrate low complication rates due to secure bone fixation.

Purpose:

  • To develop and assess the feasibility of a percutaneous bone-anchored port for hemodialysis vascular access.
  • To adapt the secure fixation principle of bone-anchored hearing aids for a novel dialysis port.

Summary:

  • A bone-anchored port system, fixed to the temporal bone, was developed for hemodialysis vascular access.
  • The development involved anatomical studies, screw stability testing, implant design, and procedural definition.
  • Technical feasibility was demonstrated, leading to an approved clinical pilot study.

Impact:

  • This bone-anchored port could offer a safer alternative to conventional central venous catheters for hemodialysis patients.
  • Reduced infection rates and improved patient outcomes are anticipated.
  • The study lays the groundwork for a new generation of secure, long-term vascular access devices.