• N Morel, V Le Guern, L Mouthon, J-C Piette, and N Costedoat-Chalumeau.
• Service de médecine interne, hôpital Cochin, Centre de référence maladies auto-immunes et systémiques rares d'Île-de-France, Assistance publique-Hôpitaux de Paris (AP-HP), Paris, France.
• Rev Med Interne. 2022 Nov 1; 43 (11): 645-648.

AbstractCardiac involvement in systemic lupus (SL) and antiphospholipid syndrome (APS) can be due to variables and involve different presentations. Pericarditis is the most common lupus manifestation and occurs in 16% to 25% of patients. While corticosteroids are usually very effective, colchicine may avoid steroids and prevent relapse. Myocarditis during SL is rare and often inaugural. They may manifest as chest pain, acute heart failure, arrhythmias or conduction disturbances, and may progress to dilated cardiomyopathy and/or permanent heart failure. Their prognosis is however generally good, even in the absence of treatment with cyclophosphamide for the less serious forms. Finally, coronary involvement in SL is most often due to atherosclerotic, thrombotic origin (generally in the context of associated APS), and exceptionally explained by coronary vasculitis. During APS, valve disease is frequent and usually asymptomatic. Thrombotic damage can be (1) coronary, typically manifesting as a myocardial infarction in a young subject with healthy coronary arteries, (2) much more rarely intracardiac, or (3) microcirculatory, generally as part of a catastrophic antiphospholipid syndrome (CAPS) leading to a multiorgan failure. Finally, iatrogenic cardiac manifestations can exceptionally be seen during treatment with cyclophosphamide or antimalarials characterized by conduction disorders and/or heart failure.Copyright © 2022 Société Nationale Française de Médecine Interne (SNFMI). Published by Elsevier Masson SAS. All rights reserved.

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