Abstract
Takotsubo syndrome, also known as broken heart syndrome, was first described in Japan in the 1990s and presents as acute heart failure caused by transient contractile dysfunction that mimics acute coronary syndrome but is not caused by acute coronary obstruction. Takotsubo syndrome accounts for as much as 2–3% of suspected coronary syndromes and is considerably more common in women than in men. In this Review, we discuss the historical background and clinical features of Takotsubo syndrome and our evolving understanding of its pathophysiology. The hallmark feature of Takotsubo syndrome is transient left ventricular dysfunction linked to emotional or physical stressors. Despite advances in our understanding of the clinical presentation and possible pathophysiological mechanisms of Takotsubo syndrome, this condition continues to challenge our fundamental understanding of human anatomy and physiology, particularly regarding how acute emotional and physical stressors can trigger such profound cardiovascular dysfunction. Although the definitive mechanisms remain elusive, current hypotheses largely centre on catecholamine surges and sympathetic nervous system hyperactivation. Diagnostic criteria have been developed by the Mayo Clinic and European Society of Cardiology working groups but, in the absence of randomized controlled clinical trials, no specific treatments for Takotsubo syndrome are available. In this Review, we highlight the complex pathophysiology of Takotsubo syndrome, with an emphasis on the interplay between emotional stress and cardiac health, and call for the development of evidence-based management protocols.
Key points
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Takotsubo syndrome is an acute, stress-triggered cardiac syndrome that causes transient left ventricular dysfunction, predominantly affecting older women in postmenopause, with most patients recovering spontaneously within weeks of symptom onset.
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Multiple mechanisms contribute to the pathophysiology of Takotsubo syndrome, including catecholamine surges, microvascular dysfunction, nitrosative stress, oestrogen deficiency, inflammation, brain–heart axis dysregulation and genetic predisposition.
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Debate persists on whether Takotsubo syndrome is a protective cardiocirculatory response to limit fatal arrhythmias during neurohormonal stress or a maladaptive response that causes severe, albeit reversible, myocardial dysfunction.
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Management of Takotsubo syndrome focuses on supportive care, avoidance of catecholamine therapies and addressing complications such as cardiogenic shock.
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The absence of randomized controlled trials for Takotsubo syndrome underscores the urgent need for evidence-based therapeutic guidelines to refine care strategies.
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E.O. researched data for the article and wrote the manuscript. Both authors contributed substantially to discussion of content and reviewed and/or edited the manuscript before submission.
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Omerovic, E., Redfors, B. Takotsubo syndrome: pathophysiological insights and innovations in patient care. Nat Rev Cardiol (2025). https://doi.org/10.1038/s41569-025-01211-5
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DOI: https://doi.org/10.1038/s41569-025-01211-5


