A Narrative Review on Broken Heart Syndrome: A Guide for Clinicians to Understand Takotsubo Cardiomyopathy

Takotsubo cardiomyopathy (TCM) is a transient and reversible cardiomyopathy which exhibits regional wall motion abnormalities in the absence of obstructive coronary artery disease. While TCM is a rare condition (incidence <1%), its diagnosis has increased since its initial description in 1990. While many cases may follow an acute physical or emotional stressor, pathophysiology is likely multifactorial including factors such as catecholamine surges and microvascular dysfunction. On initial presentation, TCM often mimics acute coronary syndrome but may be differentiated with coronary angiography. Additional laboratory testing and imaging including transthoracic echocardiography may help with diagnosis and identification of complications such as left ventricular (LV) outflow obstruction and LV thrombus. Treatment is supportive, although medications such as angiotensin-converting enzyme inhibitors and beta-blockers have shown some benefit in improving long-term outcomes. Acute complications may include arrhythmia, LV or systemic thrombus, and cardiogenic shock, but most patients do well and experience rapid recovery. TCM continues to be an active area of research as there is still much to be learned regarding its pathogenesis, diagnosis, and treatment. This review analyzes the latest research to provide insight into the presentation, pathophysiology, diagnosis, and management of TCM.