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Related Experiment Video

Updated: Jun 19, 2026

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
14:28

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

Published on: May 10, 2024

Microcirculatory dysfunction in sepsis.

David J Lundy1, Stephen Trzeciak

  • 1Department of Surgery, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School at Camden, Cooper University Hospital, Camden, NJ 08103, USA. lundy-david@cooperhealth.edu

Critical Care Clinics
|November 7, 2009
PubMed
Summary
This summary is machine-generated.

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Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...

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Sepsis-induced microcirculatory dysfunction impairs blood flow. Understanding endothelial and nitric oxide roles is key to developing new therapies for this critical condition.

Area of Science:

  • Critical care medicine
  • Vascular biology
  • Pathophysiology

Background:

  • Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection.
  • Microcirculatory dysfunction is a hallmark of sepsis pathophysiology, leading to impaired tissue perfusion.
  • The endothelium plays a crucial role in regulating vascular tone and blood flow.

Purpose of the Study:

  • To elucidate the role of microcirculatory dysfunction in sepsis.
  • To review the endothelial contribution to microcirculatory dysregulation.
  • To discuss nitric oxide's function in microcirculatory blood flow and potential therapeutic strategies.

Main Methods:

  • Literature review of sepsis pathophysiology.
  • Analysis of endothelial function in microcirculation.

Related Experiment Videos

Last Updated: Jun 19, 2026

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
14:28

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

Published on: May 10, 2024

  • Discussion of nitric oxide's role and measurement techniques for microcirculatory function.
  • Exploration of novel therapeutic approaches.

    • Main Results:

    • Microcirculatory dysfunction significantly contributes to sepsis progression.
    • Endothelial activation and dysfunction are central to altered microvascular tone and perfusion.
    • Nitric oxide pathways are critical in modulating microcirculatory blood flow during sepsis.
    • Current methods for evaluating microcirculation provide insights into disease severity.

    Conclusions:

    • Targeting microcirculatory dysfunction offers a promising therapeutic avenue in sepsis management.
    • Further research into novel therapies is needed to address endothelial and nitric oxide dysregulation.
    • Improved understanding and monitoring of microcirculation are essential for optimizing sepsis treatment.