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Related Concept Videos

Pulmonary Edema II: Pathophysiology01:18

Pulmonary Edema II: Pathophysiology

Pulmonary edema is the accumulation of fluid in the interstitial and alveolar spaces of the lungs, impairing gas exchange and oxygen delivery. It may be cardiogenic or noncardiogenic, but both reduce oxygenation and lung compliance.Cardiogenic Pulmonary EdemaCardiogenic edema results from increased hydrostatic pressure in pulmonary capillaries, usually due to left ventricular dysfunction from myocardial infarction, heart failure, or valvular disease. Ineffective cardiac pumping causes blood to...
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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
Cerebral Edema ll: Pathophysiology01:22

Cerebral Edema ll: Pathophysiology

Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
Cardiomyopathy I: Introduction and Classification01:25

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Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
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Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...

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Related Experiment Video

Updated: May 25, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
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Published on: February 16, 2016

Myocardial edema: a translational view.

David Garcia-Dorado1, Mireia Andres-Villarreal, Marisol Ruiz-Meana

  • 1Laboratory of Experimental Cardiology, Research Institute Cardiology Department Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Passeig de la Vall d'Hebron 119-129, 08035 Barcelona, Spain. dgdorado@vhebron.net

Journal of Molecular and Cellular Cardiology
|January 31, 2012
PubMed
Summary

Myocardial edema, often seen in ischemia-reperfusion injury, affects cardiomyocyte volume regulation. New methods are needed to distinguish intracellular from extracellular edema for better diagnosis and treatment.

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Area of Science:

  • Cardiovascular Biology
  • Cell Physiology
  • Medical Imaging

Background:

  • Myocardial edema is a key feature in various heart conditions, notably ischemia-reperfusion.
  • Cardiomyocyte cell volume is regulated by osmolality, aquaporins, connexin hemichannels, and caveolae.
  • Ischemia-reperfusion disrupts these mechanisms and increases microvascular permeability.

Purpose of the Study:

  • To highlight the diagnostic utility of MRI in detecting myocardial edema.
  • To address the current challenge in differentiating intra- from extracellular myocardial edema.
  • To underscore the need for novel methods to understand edema mechanisms and improve patient outcomes.

Main Methods:

  • Review of mechanisms regulating cardiomyocyte volume.
  • Discussion of ischemia-reperfusion effects on microvasculature.
  • Exploration of MRI's role in myocardial edema detection.

Main Results:

  • Myocardial edema contributes to cell dysfunction and death in pathologies like ischemia-reperfusion.
  • Existing methods struggle to differentiate between intracellular and extracellular myocardial edema.
  • MRI shows promise for diagnosing myocardial edema in conditions such as acute myocardial infarction.

Conclusions:

  • Distinguishing intra- and extracellular myocardial water is crucial for understanding edema's role.
  • Developing such methods could lead to improved diagnostic and therapeutic strategies for myocardial edema.
  • Further research into edema mechanisms can enhance clinical applications of MRI.