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Related Concept Videos

Colloids and Suspensions01:17

Colloids and Suspensions

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Coagulation01:06

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Nephrotic Syndrome III : Nursing Management01:24

Nephrotic Syndrome III : Nursing Management

Nursing management for nephrotic syndrome adapts as the disease progresses, with strategies evolving to address advancing symptoms and complications.Early-Stage Management In the early stages, nursing interventions for nephrotic syndrome resemble those used in managing acute glomerulonephritis, focusing on symptom monitoring, fluid balance, and managing mild to moderate edema.Vital Signs: Regularly monitor blood pressure, pulse, respiratory rate, and temperature to promptly identify...

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Related Experiment Video

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Endoscopic Approach for Colloid Cyst Resection
02:30

Endoscopic Approach for Colloid Cyst Resection

Published on: May 23, 2025

Colloid solutions: a clinical update.

Tomi T Niemi1, Ryo Miyashita, Michiaki Yamakage

  • 1Department of Anaesthesiology and Intensive Care Medicine, Helsinki University Hospital, Helsinki, Finland.

Journal of Anesthesia
|October 19, 2010
PubMed
Summary
This summary is machine-generated.

Colloids like hydroxyethyl starch (HES) effectively expand blood volume in critically ill patients. Modern HES solutions show minimal adverse effects and improve postoperative outcomes.

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Area of Science:

  • Anesthesiology
  • Critical Care Medicine
  • Pharmacology

Background:

  • Colloids (albumin, dextran, gelatin, HES) expand circulating blood volume, restoring intravascular volume with less edema risk than crystalloids.
  • Colloids are administered to surgical and critically ill patients, with clinical responses influenced by colloid type, volume, resuscitation aggressiveness, and initial volume status.
  • Systematic reviews suggest comparable outcomes with various colloids in critically ill patients, though a trial comparing modern nonprotein colloids to albumin is absent.

Purpose of the Study:

  • To evaluate the clinical responses and outcomes associated with different colloid solutions in fluid resuscitation.
  • To assess the safety and efficacy of rapidly degradable hydroxyethyl starch (HES) solutions, specifically HES 130/0.4.
  • To investigate the impact of HES on inflammatory response, postoperative nausea/vomiting, and overall postoperative outcome.

Main Methods:

  • Review of existing literature and systematic reviews on colloid administration in critically ill patients.
  • Analysis of data from a clinical investigation focusing on HES 130/0.4.
  • Assessment of hemodynamic effects, renal and coagulation effects, allergic reactions, inflammatory response, and postoperative outcomes.

Main Results:

  • Rapidly degradable HES solutions demonstrate favorable hemodynamic effects with minimal risk of adverse renal, coagulation, or allergic effects.
  • The investigation indicated beneficial effects of HES solution (HES 130/0.4) on inflammatory response, postoperative nausea and vomiting, and postoperative outcomes.
  • Outcomes after fluid resuscitation with various colloids in critically ill patients appear comparable, but direct comparative trials are lacking.

Conclusions:

  • Colloid selection, volume, resuscitation strategy, and initial volume status are critical determinants of clinical response.
  • Hydroxyethyl starch (HES) 130/0.4 presents a favorable safety and efficacy profile, including benefits in postoperative recovery.
  • Careful consideration of colloid indication, hypovolemia assessment, and safety profiles is essential prior to administration.