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Myocardial infarction; Other names: Acute myocardial infarction (AMI), heart attack: A myocardial infarction occurs when an atherosclerotic plaque slowly builds up in the inner lining of a coronary artery and then suddenly ruptures, causing catastrophic thrombus formation, totally occluding the artery and preventing blood flow downstream to the heart muscle.
Editor: Rishi Desai, MD, MPH, Tanner Marshall, MS According to the world health organization, cardiovascular disease is the leading cause of death worldwide, as well as in the US. Of those, a large proportion are caused by heart attacks, also known as acute myocardial infarctions, or just myocardial infarctions, sometimes just called MI.
Kawasaki disease – Affects medium-sized vessels mostly seen in young children with myocarditis, & pericarditis, and is the most common cause of acquired heart disease in children (results in coronary artery aneurysms). Myocardial infarction from coronary thrombosis is the most common cause of death from Kawasaki disease.
LBBB is diagnosed on a 12-lead ECG. In adults, it is seen as wide QRS complexes lasting ≥120ms with characteristic QRS shapes in the precordial leads, although narrower complexes are seen in children. [4] In lead V 1, the QRS complex is often entirely negative (QS morphology), although a small initial R wave may be seen (rS morphology).
Cardiomyopathy is a group of primary diseases of the heart muscle. [1] Early on there may be few or no symptoms. [1] As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. [1]
This is known as myocardial infarction. [9] A heart attack can cause arrhythmias, as well as permanent damage to the heart muscle. [25] Coronary ischemia resulting from coronary artery disease also increases the risk of developing heart failure. [10] Most cases of heart failure result from underlying coronary artery disease. [10]
Psychogenic causes of chest pain can include panic attacks; however, this is a diagnosis of exclusion. [12] In children, the most common causes for chest pain are musculoskeletal (76–89%), exercise-induced asthma (4–12%), gastrointestinal illness (8%), and psychogenic causes (4%). [13] Chest pain in children can also have congenital causes.
This can eventually lead to heart muscle tissue death, i.e., myocardial infarction (MI). [60] MI caused by thrombotic occlusion in an aneurysmal, stenotic, or both aneurysmal and stenotic coronary artery is the main cause of death from Kawasaki disease. [62] The highest risk of MI occurs in the first year after the onset of the disease. [62]