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Dialysis01:15

Dialysis

587
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...
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Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

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Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
1. Central Parenteral Nutrition (CPN):
CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
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Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

770
The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
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Related Experiment Video

Updated: Jun 5, 2025

A Retrograde Implantation Approach for Peritoneal Dialysis Catheter Placement in Mice
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Tunneled dialysis catheter: Simple, re-do, complicated.

Ehab Sorial1, Mrinal Shukla2

  • 1Vascular and Interventional Specialists of Orange County Inc., Orange, CA.

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|December 15, 2024
PubMed
Summary

Tunneled dialysis catheters (TDCs) are vital for hemodialysis, but upper body central venous occlusions complicate placement. This report details TDC insertion techniques, complications, and strategies for overcoming venous occlusions.

Keywords:
Central venous occlusionTunneled dialysis catheter

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Area of Science:

  • Vascular Surgery
  • Nephrology
  • Interventional Radiology

Background:

  • Tunneled dialysis catheters (TDCs) are crucial for hemodialysis access in many patients.
  • Right internal jugular vein is the preferred site for TDC insertion due to lower complication rates.

Purpose of the Study:

  • To describe TDC insertion techniques in the upper body.
  • To outline complications associated with long-term TDC use.
  • To discuss solutions for upper body central venous occlusions complicating TDC placement.

Main Methods:

  • Review of TDC insertion techniques.
  • Analysis of complications from long-term TDC use.
  • Evaluation of strategies for managing central venous occlusions.
  • Review of methods for converting TDCs to permanent dialysis access.

Main Results:

  • Upper body central venous occlusions present significant challenges for TDC insertion.
  • Various techniques and solutions exist to mitigate complications and facilitate TDC placement.
  • Strategies for converting TDCs to long-term hemodialysis access are available.

Conclusions:

  • Effective management of upper body central venous occlusions is essential for successful TDC placement.
  • Understanding complications and available solutions improves patient outcomes in hemodialysis.
  • Techniques for TDC insertion and conversion to permanent access enhance dialysis care.