mes notes précises sur IM et RM ; IM : L'insuffisance mitrale est une valvulopathie caractérisée par une fermeture incomplète de la valve mitrale pendant la systole ventriculaire. Cela entraîne un reflux de sang du ventricule gauche vers l'oreillette gauche, compromettant ainsi la circulation ...
Défaut de fermeture complète de la valvule mitrale.
L’insuffisance
Le sang peut refluer lors de la systole du VG OG.
mitrale Valvule mitrale = Anneau +2valves (Ant ; post) +
Appareil sous valvulaire (2 grpes de cordage ; 2 M Papillaires)
I. ANATOMOPATHOLOGIQUE :
Cordages : Anneau mitral : Congestion
Lésions valvulaires : pulmonaire tardive.
Epaississement et Dilatation, calcification.
Epaississement et rétraction de
valve, prolapsus de la valve rétraction, rupture de Dilatation VG et OG :
mitrale, perforation de valve, cordage.
fente congénitale.
Classification de Carpentier :
II. ETIOLOGIE :
RAA
Endocardite inf.
Dystrophie
Myxome de OG
Ischémique : dysfonctionnement ou rupture d'un pilier.
Insuffisance mitrale fonctionnelle par dilatation de l’anneau.
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