Toxicité myocardique des catécholamines: à propos de deux observations.
Rev Med Interne 2007;
28:866-70. [PMID:
17611002 DOI:
10.1016/j.revmed.2007.06.009]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Revised: 06/04/2007] [Accepted: 06/12/2007] [Indexed: 12/20/2022]
Abstract
INTRODUCTION
The role of catecholamines in the cardiac expression of pheochromocytoma is well-known. The physiopathology of the syndrome of Tako-tsubo remains more unclear.
EXEGESIS
We describe 2 clinical cases of acute coronary syndrome with left ventricular dysfunction and no coronary artery stenosis. The first, a syndrome of Tako-tsubo, also known as transient left ventricular apical ballooning syndrome, is characterized by transient wall-motion in the absence of obstructive epicardial coronary disease. The second is a pheochromocytoma with myocardial suffering during hypertension crisis. Through the similarities of these 2 observations, we discuss the physiopathological assumptions to explain the syndrome of Tako-tsubo by underlining the essential place of the catecholamine hypersecretion.
CONCLUSION
Syndrome of Tako-tsubo and pheochromocytoma are 2 distinct clinical entities. The link between these 2 affections is probably the pathogenic role in cardiac toxicity with the catecholamines.
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