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Myocardial infarction complications may occur immediately following a myocardial infarction (heart attack) (in the acute phase), or may need time to develop (a chronic problem). After an infarction, an obvious complication is a second infarction, which may occur in the domain of another atherosclerotic coronary artery, or in the same zone if ...
The dead tissue is surrounded by a zone of potentially reversible ischemia that progresses to become a full-thickness transmural infarct. [76] [79] The initial "wave" of infarction can take place over 3–4 hours. [73] [76] These changes are seen on gross pathology and cannot be predicted by the presence or absence of Q waves on an ECG. [78]
Coronary ischemia can have serious consequences if it is not treated. Plaques in the walls of the coronary arteries can rupture, resulting in occlusion of the artery and deprivation of blood flow and oxygen to the heart muscle, resulting in cardiac cell death. [9] This is known as myocardial infarction. [9]
Infarction occurs as a result of prolonged ischemia, which is the insufficient supply of oxygen and nutrition to an area of tissue due to a disruption in blood supply.The blood vessel supplying the affected area of tissue may be blocked due to an obstruction in the vessel (e.g., an arterial embolus, thrombus, or atherosclerotic plaque), compressed by something outside of the vessel causing it ...
Information card published by the National Heart, Lung, and Blood Institute urging people with symptoms of angina to call the emergency medical services.. Because of the relationship between the duration of myocardial ischemia and the extent of damage to heart muscle, public health services encourage people experiencing possible acute coronary syndrome symptoms or those around them to ...
A myocardial infarction, also known as a heart attack, often result in the formation of fibrosis. [2] A myocardial infarction is an ischemic event, or a restriction of blood flow to body tissue, such as by atherothrombosis. [4] Without blood flow to the myocardium, it is deprived of oxygen, causing tissue death and irreversible damage. [5]
hibernating myocardium, silent ischemia, myocardial infarction, acute pericarditis, myocarditis, pulmonary embolism Myocardial stunning or transient post-ischemic myocardial dysfunction is a state of mechanical cardiac dysfunction that can occur in a portion of myocardium without necrosis after a brief interruption in perfusion , despite the ...
Myocardial ruptures can be classified as one of three types. [citation needed] Type I myocardial rupture is an abrupt, slit-like tear that generally occurs within 24 hours of an acute myocardial infarction. Type II is an erosion of the infarcted myocardium, which is suggestive of a slow tear of the dead myocardium.