Search results
Results from the WOW.Com Content Network
Ischemia or ischaemia is a restriction in blood supply to any tissue, muscle group, or organ of the body, causing a shortage of oxygen that is needed for cellular metabolism (to keep tissue alive). [ 3 ] [ 4 ] Ischemia is generally caused by problems with blood vessels , with resultant damage to or dysfunction of tissue i.e. hypoxia and ...
Coronary ischemia, myocardial ischemia, [1] or cardiac ischemia, [2] is a medical term for abnormally reduced blood flow in the coronary circulation through the coronary arteries. [3] Coronary ischemia is linked to heart disease , and heart attacks . [ 4 ]
Mental stress-induced myocardial ischemia (MSIMI) is a medical condition in which acute psychological stress can trigger a transient myocardial ischemia, which is a state of reduced blood flow to the heart muscle, often without the presence of significant coronary artery disease (CAD).
Ischemic cardiomyopathy is a type of cardiomyopathy caused by a narrowing of the coronary arteries which supply blood to the heart. [4] Typically, patients with ischemic cardiomyopathy have a history of acute myocardial infarction, [5] however, it may occur in patients with coronary artery disease, but without a past history of acute myocardial infarction.
Symptoms of the acute coronary syndromes are similar. [8] The cardinal symptom of critically decreased blood flow to the heart is chest pain, experienced as tightness, pressure, or burning. [9] Localization is most commonly around or over the chest and may radiate or be located to the arm, shoulder, neck, back, upper abdomen, or jaw. [9]
In stable angina, symptoms occur with exercise or emotional stress, last less than a few minutes, and improve with rest. [4] Shortness of breath may also occur and sometimes no symptoms are present. [4] In many cases, the first sign is a heart attack. [5] Other complications include heart failure or an abnormal heartbeat. [5]
It has evolved to evaluate inducible myocardial ischemia as an indicator of adverse outcomes. The factors influencing mortality risk have changed over time due to decreasing angina symptoms, increasing prevalence of conditions like diabetes and obesity, and the rise in pharmacologic testing for patients unable to exercise during stress tests. [40]
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.