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Related Concept Videos

Acute Inflammation II: Local and Systemic Effects01:25

Acute Inflammation II: Local and Systemic Effects

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...
Blood Pressure Imbalances and Circulatory Shock01:24

Blood Pressure Imbalances and Circulatory Shock

Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
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Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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Pulmonary Edema II: Pathophysiology

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Related Experiment Video

Updated: May 7, 2026

A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats
05:56

A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats

Published on: February 20, 2021

Pathophysiologic mechanisms in septic shock.

Elizabeth G King1, Gustavo J Bauzá1, Juan R Mella1

  • 11] Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA, USA [2] Department of Surgery, Boston University Medical Center, Boston, MA, USA.

Laboratory Investigation; a Journal of Technical Methods and Pathology
|September 25, 2013
PubMed
Summary
This summary is machine-generated.

Sepsis triggers systemic inflammation and coagulation issues, impacting multiple organs. Current treatments focus on source control, antibiotics, and supportive care, as targeted therapies have largely failed.

Related Experiment Videos

Last Updated: May 7, 2026

A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats
05:56

A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats

Published on: February 20, 2021

Area of Science:

  • Critical Care Medicine
  • Immunology
  • Hematology

Background:

  • Sepsis involves a complex systemic inflammatory response to infection.
  • This response causes widespread physiological derangements and immune dysregulation.
  • Hemostatic balance shifts towards a procoagulant state, risking thrombosis.

Purpose of the Study:

  • To review immunopathologic and coagulopathic alterations in sepsis.
  • To discuss biomarkers for sepsis diagnosis and outcome prediction.
  • To outline current clinical management strategies for septic patients.

Main Methods:

  • Literature review of immunologic and hemostatic changes in sepsis.
  • Analysis of diagnostic and prognostic biomarkers.
  • Summary of established and investigational therapeutic approaches.

Main Results:

  • Sepsis induces significant alterations in cellular immune function and regulation.
  • Procoagulant shifts and impaired fibrinolysis characterize sepsis-associated coagulopathy.
  • Biomarkers like C-reactive protein and procalcitonin show variable diagnostic utility.
  • Targeted sepsis therapies, including recombinant human activated protein C, have yielded limited success.

Conclusions:

  • Sepsis presents a multifaceted challenge involving immune and coagulation systems.
  • Effective management relies on source control, antibiotics, and supportive interventions.
  • Further research into reliable biomarkers and targeted therapies is warranted.