1. The Role of Optical Coherence Tomography in Clarifying the Mechanisms for Dobutamine Stress Echocardiography-Induced Takotsubo Cardiomyopathy

    The Role of Optical Coherence Tomography in Clarifying the Mechanisms for Dobutamine Stress Echocardiography-Induced Takotsubo Cardiomyopathy

    Takotsubo cardiomyopathy is a clinical disorder characterized by a transient dilatation and akynesis or dyskinesis of the left ventricular (LV) apex, mimicking an anterior wall acute myocardial infarction in the absence of significant coronary artery disease (CAD). It typically occurs during an episode of severe emotional or physical stress. Recent reports suggested the potential of dobutamine stress echocardiography (DSE) in inducing the aforementioned syndrome. The transient dysfunction of the LV does not fit any known coronary distribution. Furthermore, there is no obstructive CAD demonstrated at angiography to account for the observed dysfunction. Consequently, the pathophysiology of this syndrome is still ...

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