TY - CHAP M1 - Book, Section TI - Mimickers of Atherosclerotic Myocardial Infarction: SCAD, Coronary Vasospasm, Myocarditis, and Takotsubo Syndrome A1 - Saw, Jacqueline A1 - Chandrasekhar, Jaya A1 - Zaman, Sarah A1 - Reynolds, Harmony A2 - Fuster, Valentin A2 - Narula, Jagat A2 - Vaishnava, Prashant A2 - Leon, Martin B. A2 - Callans, David J. A2 - Rumsfeld, John S. A2 - Poppas, Athena PY - 2022 T2 - Fuster and Hurst's The Heart, 15e AB - Chapter SummaryThis chapter discusses important nonatherosclerotic etiologies of myocardial injury, which can be due to ischemic or nonischemic causes (see Fuster and Hurst's Central Illustration). Differentiating the etiology of myocardial injury is critical because the management strategy differs for atherosclerotic versus nonatherosclerotic causes. Type 1 myocardial infarctions (MIs) are due to atherosclerotic plaque rupture/erosion with thrombus formation and typically require invasive management for restoration of coronary perfusion. Type 2 MIs can result from ischemia due to imbalance of oxygen supply and demand, or nonatherosclerotic causes such as spontaneous coronary artery dissection, coronary vasospasm, coronary embolism, coronary vasculitis, coronary ectasia, and anatomic coronary artery anomaly. Causes of nonischemic myocardial injury include myocarditis, takotsubo syndrome, and heart failure. The management of type 2 MIs and nonischemic causes of myocardial injury depends on the underlying etiology, and thus discerning these “mimickers” of non-type 1 MI is pertinent for prompt and appropriate management of acute coronary syndromes. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesscardiology.mhmedical.com/content.aspx?aid=1202444104 ER -