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Related Concept Videos

Types of Fluids01:27

Types of Fluids

1.2K
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
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Characteristics of Fluids01:20

Characteristics of Fluids

7.3K
When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...
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Characteristics of Fluids01:31

Characteristics of Fluids

1.3K
Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
1.3K
Composition of Body Fluids01:29

Composition of Body Fluids

3.0K
Water functions as a solvent accommodating various solutes, which can be categorized under electrolytes and non-electrolytes. Non-electrolytes are usually held together by covalent bonds, restricting them from dissociating in solution, thereby leading to a lack of electrically charged components upon dissolving in water. They are predominantly organic molecules, such as glucose, creatinine, and urea. Electrolytes, on the other hand, are compounds that can break down into ions in water.
3.0K
Fluid Movement Between Compartments01:18

Fluid Movement Between Compartments

4.1K
The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
4.1K
Body Water Content and Fluid Compartments01:19

Body Water Content and Fluid Compartments

4.0K
Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions...
4.0K

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Development of New Therapeutic Applications Using Microfluidics
08:56

Development of New Therapeutic Applications Using Microfluidics

Published on: October 1, 2007

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Evolution of fluid therapy.

Tim Kampmeier1, Sebastian Rehberg1, Christian Ertmer1

  • 1Department of Anesthesiology, Intensive Care and Pain Therapy, University Hospital of Muenster, Muenster, Germany.

Best Practice & Research. Clinical Anaesthesiology
|September 12, 2014
PubMed
Summary
This summary is machine-generated.

Intravenous fluid therapy has evolved significantly. Current evidence suggests abandoning 0.9% saline due to risks, advocating for balanced solutions and further research into optimal fluid management protocols.

Keywords:
acute kidney injuryfluid therapyhydroxyethyl starchhypovolaemiashock

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Bedside Ultrasound for Guiding Fluid Removal in Patients with Pulmonary Edema: The Reverse-FALLS Protocol
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Area of Science:

  • Critical Care Medicine
  • Nephrology
  • Medical History

Background:

  • Human survival mechanisms against hypovolemia are evolutionarily conserved.
  • Intravenous fluid therapy has been utilized for approximately 180 years.
  • Fluid therapy has progressed from basic solutions to modern balanced fluids.

Purpose of the Study:

  • To review the historical evolution of intravenous fluid therapy.
  • To evaluate the current evidence regarding fluid solutions and their impact on patient outcomes.
  • To identify gaps in research concerning fluid therapy protocols, particularly during critical shock phases.

Main Methods:

  • Literature review of historical and contemporary studies on intravenous fluid therapy.
  • Analysis of evidence comparing 0.9% saline with balanced crystalloid solutions.
  • Examination of trial data focusing on fluid therapy in shock and acute kidney injury.

Main Results:

  • Accumulating evidence indicates 0.9% saline offers no advantage over balanced solutions and may increase acute kidney injury risk.
  • The critical 'golden hours' of shock management, crucial for fluid therapy efficacy, remain inadequately studied.
  • The reasons for negative outcomes with colloids in some trials are unclear, potentially due to inadequate application rather than inherent harm.

Conclusions:

  • 0.9% saline should be abandoned in favor of balanced solutions due to safety concerns.
  • Further research is needed to establish optimal fluid therapy protocols for specific conditions, including initiation, dosage, and discontinuation.
  • The concept and practice of 'de-resuscitation' following hemodynamic stabilization require further investigation.