Découvrez l'article du mois d'avril des Archives of Cardiovascular Diseases, la revue scientifique en anglais de la SFC : 
Left atrial cardiomyopathy: Pathophysiological insights, assessment methods and clinical implications 
Sandro Ninni, Vincent Algalarrondo, Fabien Brette, Gilles Lemesle, Jérémy Fauconnier, on behalf of the Groupe de Reflexion sur la Recherche Cardiovasculaire (GRRC)


Atrial cardiomyopathy is defined as any complex of structural, architectural, contractile or electrophysiological changes affecting atria, with the potential to produce clinically relevant manifestations.

Most of our knowledge about the mechanistic aspects of atrial cardiomyopathy is derived from studies investigating animal models of atrial fibrillation and atrial tissue samples obtained from individuals who have a history of atrial fibrillation.

Several noninvasive tools have been reported to characterize atrial cardiomyopathy in patients, which may be relevant for predicting the risk of incident atrial fibrillation and its related outcomes, such as stroke.

Here, we provide an overview of the pathophysiological mechanisms involved in atrial cardiomyopathy, and discuss the complex interplay of these mechanisms, including aging, left atrial pressure overload, metabolic disorders and genetic factors.

We discuss clinical tools currently available to characterize atrial cardiomyopathy, including electrocardiograms, cardiac imaging and serum biomarkers.

Finally, we discuss the clinical impact of atrial cardiomyopathy, and its potential role for predicting atrial fibrillation, stroke, heart failure and dementia. Overall, this review aims to high-light the critical need for a clinically relevant definition of atrial cardiomyopathy to improve treatment strategies.

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