[fr] Résumé : L’étude rapportée avait pour but de quantifier la réserve contractile ventriculaire gauche (VG) et d’évaluer son utilité pour la stratification du risque chez les patients asymptomatiques avec insuffisance mitrale (IM) primaire. Une échocardiographie au repos et à l’effort, incluant le suivi des marqueurs acoustiques, a été effectuée chez 115 patients consécutifs, présentant une IM primaire modérée ou sévère.La réserve contractile du VG est définie comme une augmentation induite par l’effort de la fraction d’éjection VG ≥ 4% ou de la déformation longitudinale VG ≥ 2%. La réserve contractile VG est absente dans approximativement la moitié de la population. Cette absence est un facteur prédictif indépendant d’événement cardiaque, s’il est évalué par les changements induits par l’effort de la fonction longitudinale VG, mais pas ceux de la fraction d’éjection VG.
Disciplines :
Cardiovascular & respiratory systems
Author, co-author :
PIERARD, Luc ; Centre Hospitalier Universitaire de Liège - CHU > Cardiologie
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