Tako-tsubo cardiomyopathy: The "broken heart syndrome"
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MedicineAbstract
Tako-tsubo cardiomyopathy is a recently described clinical entity which classically presents as an acute coronary syndrome. Key features include “ballooning” of the left ventricle, patent coronary arteries, non-specific electrocardiogram changes and elevated cardiac enzymes. This condition clinically mimics acute myocardial infarction and is believed to account for at least 1-2% of patients admitted to hospital with this diagnosis. The typical patient with tako-tsubo cardiomyopathy is a postmenopausal woman presenting with acute onset of chest pain and dyspnoea, who has recently experienced a profoundly stressful physiological or psychological event. Catecholamines are implicated in the pathophysiology of this condition, although their precise role is the subject of much debate. Currently, routine investigations are not specific for tako-tsubo cardiomyopathy and it should be considered as a diagnosis of exclusion. Relative to myocardial infarction, the prognosis of tako-tsubo cardiomyopathy is excellent; the mortality rate is low, fewer than 10% of patients experience a recurrence of the condition and recovery is generally spontaneous with minimal intervention. Herein, the aim of this review is to provide an overview of tako-tsubo cardiomyopathy by examining its pathophysiology and clinical characteristics.
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