Publicité D▼
edema (n.)
1.(American)swelling from excessive accumulation of watery fluid in cells, tissues, or serous cavities
Edema (n.)
1.(MeSH)Abnormal fluid accumulation in TISSUES or body cavities. Most cases of edema are present under the SKIN in SUBCUTANEOUS TISSUE.
Publicité ▼
Merriam Webster
EdemaE*de"ma (?), n. [NL.] (Med.) Same as œdema.
Publicité ▼
⇨ voir la définition de Wikipedia
⇨ Angioneurotic Edema • Berlin's edema • Brain Edema • Calabar edema • Cardiac Edema • Central Retinal Edema, Cystoid • Cerebral Edema • Cerebral Edema, Cytotoxic • Cerebral Edema, Vasogenic • Corneal Edema • Cystoid Macular Edema • Cystoid Macular Edema, Postoperative • Cytotoxic Brain Edema • Cytotoxic Cerebral Edema • Edema Disease of Swine • Edema, Cardiac • Edema, Fetal • Edema, Pulmonary • Edema-Proteinuria-Hypertension Gestosis • Fetal Edema • Hereditary Angioneurotic Edema • Huguenin's edema • Hypertension-Edema-Proteinuria Gestosis • Intracranial Edema • Laryngeal Edema • Macular Edema • Macular Edema, Cystoid • Optic Disk Edema • Optic Papilla Edema • Orofacial Edema, Cheilitis Granulomatosa, Facial Neuropathy • Orofacial Edema, Facial Neuropathy, Cheilitis Granulomatosa • Proteinuria-Edema-Hypertension Gestosis • Pulmonary Edema • Quincke's Edema • Quincke's edema • Retinal Edema • Vasogenic Brain Edema • Vasogenic Cerebral Edema • brain edema • cerebral edema • cystoid macular edema • macular edema • periodic edema
⇨ Acne with facial edema • Acute hemorrhagic edema of childhood • Acute hemorrhagic edema of infancy • Angioneurotic edema • Cerebral edema • Chronic upper facial erythematous edema • Conjunctival Edema • Conjunctival edema • Edema blister • Edema bulla • Flash pulmonary edema • Heat edema • Hereditary angioneurotic edema • High altitude cerebral edema • High altitude pulmonary edema • Hysterical edema • Infantile postinfectious iris-like purpura and edema • Lung edema • Macular edema • Peripheral edema • Persistent edema of rosacea • Pulmonary edema • Quincke edema • Quincke's edema • Reinke's edema • Remitting seronegative symmetrical synovitis with pitting edema • Solid facial edema • Triple edema
Edema (n.) [MeSH]
Signs and Symptoms[Hyper.]
edema (n.) [American]
écoulement pathologique (fr)[Classe]
obesity[Classe]
edema; oedema; hydrops; dropsy[ClasseHyper.]
(water; H2O), (hydropathy; hydrotherapy), (drinking-water purification; drinking-water treatment)[termes liés]
maladie du cœur (fr)[DomainDescrip.]
bump, lump, puffiness, swelling[Hyper.]
dropsical, edematous, hydropic[Dérivé]
Wikipedia
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (May 2011) |
ICD-10 | R60.9 |
---|---|
ICD-9 | 782.3 |
DiseasesDB | 9148 |
MedlinePlus | 003103 |
MeSH | D004487 |
Edema (American English) or oedema (British English) ( /ɪˈdimə/; from the Greek οἴδημα - oídēma, "swelling"[1]), formerly known as dropsy or hydropsy, is an abnormal accumulation of fluid beneath the skin or in one or more cavities of the body that produces swelling. Generally, the amount of interstitial fluid is determined by the balance of fluid homeostasis, and increased secretion of fluid into the interstitium or impaired removal of this fluid may cause edema.[citation needed]
Contents |
Cutaneous edema is referred to as "pitting" when, after pressure is applied to a small area, the indentation persists for some time after the release of the pressure. Peripheral pitting edema, as shown in the illustration, is the more common type, resulting from water retention. It can be caused by systemic diseases, pregnancy in some women, either directly or as a result of heart failure, or local conditions such as varicose veins, thrombophlebitis, insect bites, and dermatitis.
Non-pitting edema is observed when the indentation does not persist. It is associated with such conditions as lymphedema, lipoedema and myxedema.
Edema caused by malnutrition defines kwashiorkor.
A rise in hydrostatic pressure occurs in cardiac failure. A fall in osmotic pressure occurs in nephrotic syndrome and liver failure. It is commonly thought that these facts explain the occurrence of edema in these conditions. However, it has been known since the 1950s that the situation is more complex and it is still far from completely understood.[2]
Causes of edema which are generalized to the whole body can cause edema in multiple organs and peripherally. For example, severe heart failure can cause pulmonary edema, pleural effusions, ascites and peripheral edema.
Although a low plasma oncotic pressure is widely cited for the edema of nephrotic syndrome, most physicians note that the edema may occur before there is any significant protein in the urine (proteinuria) or fall in plasma protein level. Fortunately there is another explanation available. Most forms of nephrotic syndrome are due to biochemical and structural changes in the basement membrane of capillaries in the kidney glomeruli, and these changes occur, if to a lesser degree, in the vessels of most other tissues of the body. Thus the resulting increase in permeability that leads to protein in the urine can explain the edema if all other vessels are more permeable as well.
As well as the previously mentioned conditions, edemas or oedemas often occur during the late stages of pregnancy in some women. This is more common with those of a history of puliminary problems or poor circulation also being intensified if arthritis is already present in that particular woman. Women that already have arthritic problems most often have to seek medical help for pain caused from over-reactive swelling. Edemas that occur during pregnancy are usually found in the lower part of the leg, usually from the calf down.
Edema will occur in specific organs as part of inflammations, tendinitis or pancreatitis, for instance. Certain organs develop edema through tissue specific mechanisms.
Examples of edema in specific organs:
Six factors can contribute to the formation of edema:
Generation of interstitial fluid is regulated by the forces of the Starling equation.[5] Hydrostatic pressure within blood vessels tends to cause water to filter out into the tissue. This leads to a difference in protein concentration between blood plasma and tissue. As a result the oncotic pressure of the higher level of protein in the plasma tends to suck water back into the blood vessels from the tissue. Starling's equation states that the rate of leakage of fluid is determined by the difference between the two forces and also by the permeability of the vessel wall to water, which determines the rate of flow for a given force imbalance. Most water leakage occurs in capillaries or post capillary venules, which have a semi-permeable membrane wall that allows water to pass more freely than protein. (The protein is said to be reflected and the efficiency of reflection is given by a reflection constant of up to 1.) If the gaps between the cells of the vessel wall open up then permeability to water is increased first, but as the gaps increase in size permeability to protein also increases with a fall in reflection coefficient.
Changes in the variables in Starling's equation can contribute to the formation of edema either by an increase in hydrostatic pressure within the blood vessel, a decrease in the oncotic pressure within the blood vessel or an increase in vessel wall permeability. The latter has two effects. It allows water to flow more freely and it reduces the oncotic pressure difference by allowing protein to leave the vessel more easily.
Edema in plants is the extended swelling in plant organs caused primarily by an excessive accumulation of water, a condition most damaging in Cacti, Fuchsias, Pelargonium and Succulents. The excess absortion of water can cause cells to rupture, partly due to the cell walls being composed of flexible cellulose.[citation needed]
Media related to Edema at Wikimedia Commons
Foot, c. 2 weeks post surgery because of compartment syndrome
Left and right ring fingers of the same individual. The distal phalanx of the finger on the right exhibits edema due to acute paronychia.
|
|
Contenu de sensagent
dictionnaire et traducteur pour sites web
Alexandria
Une fenêtre (pop-into) d'information (contenu principal de Sensagent) est invoquée un double-clic sur n'importe quel mot de votre page web. LA fenêtre fournit des explications et des traductions contextuelles, c'est-à-dire sans obliger votre visiteur à quitter votre page web !
Essayer ici, télécharger le code;
SensagentBox
Avec la boîte de recherches Sensagent, les visiteurs de votre site peuvent également accéder à une information de référence pertinente parmi plus de 5 millions de pages web indexées sur Sensagent.com. Vous pouvez Choisir la taille qui convient le mieux à votre site et adapter la charte graphique.
Solution commerce électronique
Augmenter le contenu de votre site
Ajouter de nouveaux contenus Add à votre site depuis Sensagent par XML.
Parcourir les produits et les annonces
Obtenir des informations en XML pour filtrer le meilleur contenu.
Indexer des images et définir des méta-données
Fixer la signification de chaque méta-donnée (multilingue).
Renseignements suite à un email de description de votre projet.
Jeux de lettres
Les jeux de lettre français sont :
○ Anagrammes
○ jokers, mots-croisés
○ Lettris
○ Boggle.
Lettris
Lettris est un jeu de lettres gravitationnelles proche de Tetris. Chaque lettre qui apparaît descend ; il faut placer les lettres de telle manière que des mots se forment (gauche, droit, haut et bas) et que de la place soit libérée.
boggle
Il s'agit en 3 minutes de trouver le plus grand nombre de mots possibles de trois lettres et plus dans une grille de 16 lettres. Il est aussi possible de jouer avec la grille de 25 cases. Les lettres doivent être adjacentes et les mots les plus longs sont les meilleurs. Participer au concours et enregistrer votre nom dans la liste de meilleurs joueurs ! Jouer
Dictionnaire de la langue française
Principales Références
La plupart des définitions du français sont proposées par SenseGates et comportent un approfondissement avec Littré et plusieurs auteurs techniques spécialisés.
Le dictionnaire des synonymes est surtout dérivé du dictionnaire intégral (TID).
L'encyclopédie française bénéficie de la licence Wikipedia (GNU).
Copyright
Les jeux de lettres anagramme, mot-croisé, joker, Lettris et Boggle sont proposés par Memodata.
Le service web Alexandria est motorisé par Memodata pour faciliter les recherches sur Ebay.
La SensagentBox est offerte par sensAgent.
Traduction
Changer la langue cible pour obtenir des traductions.
Astuce: parcourir les champs sémantiques du dictionnaire analogique en plusieurs langues pour mieux apprendre avec sensagent.
calculé en 0,062s