Cerebral edema is excess accumulation of fluid (edema) in the intracellular or extracellular spaces of the brain. Contents. 1 Signs and symptoms; 2 Causes. El edema cerebral subyacente en esta patología puede ser de varios tipos: citotóxico, vasogénico, intersticial o hidrostático. El aumento de la presión. Aumento patológico de la cantidad de agua en el cerebro con incremento del volumen del parénquima cerebral. Vasogénico Citotóxico.
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Encephalitis Viral encephalitis Herpesviral encephalitis Limbic encephalitis Encephalitis lethargica Cavernous sinus thrombosis Brain abscess Amoebic. Radiographic features CT grey-white matter differentiation is maintained and the edema involves mainly white matter, extending in finger-like fashion secondary effects of vasogenic edema are similar to cytotoxic edema, with effacement of cerebral sulciwith or without midline shift MRI hyperintense T2 and FLAIR signals, which do not show restricted diffusion 2 cf.
This type ciotoxico edema may result from trauma, tumors, focal inflammation, late stages of cerebral ischemia and hypertensive encephalopathy.
Cerebral edema – Wikipedia
Synonyms or Alternate Spellings: Cerebral edema is excess accumulation of fluid gasogenico in the intracellular or extracellular spaces of the brain. Check for errors and try again. DWI changes Case 1: Cytotoxic edema is seen with h toxins, including dinitrophenoltriethyltin, hexachloropheneand isoniazid.
In true isolated cytotoxic edema little change is evident on CT as a mere redistribution of water from extracellular to intracellular compartments does not result in attenuation changes.
Edema cerebral citotoxico — Поиск по картинкам — [RED]
Four types of cerebral edema have been identified: Interstitial cerebral edema differs from vasogenic edema as CSF contains almost no protein. You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.
Treatment approaches can include osmotherapy using mannitoldiuretics to decrease fluid volume, corticosteroids to suppress the immune system, hypertonic saline, and surgical decompression to allow the brain tissue room to swell without compressive injury. Mechanisms contributing to blood—brain barrier dysfunction include physical disruption by arterial hypertension or trauma, and tumor-facilitated release of vasoactive and endothelial destructive compounds e.
The changes colloquially ascribed to ‘cytotoxic edema’ are in fact mostly due to ionic edema and are described separately. Subtypes of vasogenic edema include:.
One manifestation of this is P. Fast travel to high altitude without proper acclimatization can cause high-altitude cerebral edema HACE. Thrombus Thrombosis Renal vein thrombosis.
Loading Stack – 0 images remaining. Case 1 – breast cancer metastases Case 1 – breast cancer metastases. Cerebral edema can result from brain trauma or from nontraumatic causes such as ischemic strokecanceror brain inflammation due to meningitis or encephalitis. Treatment generally focuses on the underlying cause of cerebral edema. This intracellular edema mainly affects grey matter but also involves the white matter as astrocytes are also involved.
The remainder of this article is concerned with true cytotoxic edema. CT sign of brain swelling without concomitant parenchymal hypoattenuation: Poliomyelitis Demyelinating disease Transverse myelitis Tropical spastic paraparesis Epidural abscess.
As the pathophysiology of these two types of edema is different, as is their imaging, they are discussed separately. Log in Sign up. Views Read Edit View history.
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Many studies of the mechanical properties of brain edema were conducted in the s, most of them based on finite element analysis FEAa widely used numerical method in solid xerebral. It can occur in Reye’s syndromesevere hypothermiaearly edemsencephalopathyearly stroke or hypoxiacardiac arrest, and pseudotumor cerebri. The term is frequently used in clinical practice to denote the combination of both true cytotoxic cellular edema as well as ionic cerebral edema.
Insomnia Hypersomnia Sleep apnea Obstructive Congenital central hypoventilation syndrome Narcolepsy Cataplexy Kleine—Levin Circadian rhythm sleep disorder Advanced sleep phase disorder Delayed sleep phase disorder Nonhour sleep—wake disorder Jet lag.
Brain ischemia Ischaemic heart disease large intestine: Unable to process the form. Altered metabolism may cause brain cells to retain waterand dilution of the blood plasma may cause excess water to move into cersbral cells. This allows intravascular proteins and fluid to penetrate into the parenchymal extracellular space.
Vasogenic edema occurs due to a breakdown of the tight endothelial junctions that make up the blood—brain barrier.
Brain Encephalitis Viral encephalitis Herpesviral encephalitis Limbic encephalitis Encephalitis lethargica Cavernous sinus thrombosis Brain abscess Amoebic. Edema darker areas surrounding a secondary brain tumor.