[Early left ventricular remodelling following acute coronary accident].
Ventricular remodelling following acute coronary syndromes is both complex and multiform. It is due to the response of the myocardium to the different agressions associated with these syndromes, in particular the ischemia and necrosis downstream of the occluded artery. We must not however neglect the role of the remodelling of the lesions resulting from spontaneous reperfusion or provoked by the cells and tissues associated with coronary microcirculation embolisms and the no-reflow phenomenon. Acute post-infarct remodelling is dominated by early ventricular dilatation which largely affects late prognosis, necrosis elimination and its replacement by a fibrotic scar in parallel with a compensatory hypertrophy of the non-infarcted myocardium. The diverse cellular and molecular components of this remodelling are increasingly well-known, allowing us to better explain the beneficial effects of the currently available medications and providing us with new potential therapeutic targets. A grading of this knowledge associated with the identification of new risk factors and early therapeutic interventions should help us to further limit the deleterious aspects of this remodelling in the goal of preventing, or at least delaying, the devolution towards heart failure.
Inserm U. 460, Groupe Hospitalier Bichat-Claude Bernard, 46, rue Henri Huchard, 75018 Paris, France.
Roger
R
Gaertner
Damien
D
Logeart
Jean-Baptiste
JB
Michel
Jean-Jacques
JJ
Mercadier
D000208:Acute Disease; D000789:Angina, Unstable / Q000503:physiopathology* / Q000628:therapy; D005109:Extracellular Matrix / Q000502:physiology; D006801:Humans; D009203:Myocardial Infarction / Q000503:physiopathology* / Q000628:therapy; D013577:Syndrome; D020257:Ventricular Remodeling / Q000502:physiology