What is myocardial infarction articles?
Myocardial infarction (MI), colloquially known as “heart attack,” is caused by decreased or complete cessation of blood flow to a portion of the myocardium. Myocardial infarction may be”silent,” and go undetected, or it could be a catastrophic event leading to hemodynamic deterioration and sudden death.
What is myocardial infarction NCBI?
How are myocardial infarction classified?
The classification distinguishes between type 1 myocardial infarction due to thrombosis of an atherosclerotic plaque and type 2 myocardial infarction due to myocardial oxygen supply-demand imbalance in the context of another acute illness.
What is myocardial infarction and explain its pathogenesis?
Abstract. Myocardial infarction is defined as sudden ischemic death of myocardial tissue. In the clinical context, myocardial infarction is usually due to thrombotic occlusion of a coronary vessel caused by rupture of a vulnerable plaque.
What is the common term for myocardial infarction?
Acute Myocardial Infarction (heart attack) Acute myocardial infarction, also known as a heart attack, is a life-threatening condition that occurs when blood flow to the heart muscle is abruptly cut off, causing tissue damage.
What are the main causes of myocardial infarction?
Myocardial infarction (MI) usually results from an imbalance in oxygen supply and demand, which is most often caused by plaque rupture with thrombus formation in an epicardial coronary artery, resulting in an acute reduction of blood supply to a portion of the myocardium.
What are the two types of myocardial infarction?
Type 1: Spontaneous MI caused by ischemia due to a primary coronary event (eg, plaque rupture, erosion, or fissuring; coronary dissection) Type 2: Ischemia due to increased oxygen demand (eg, hypertension), or decreased supply (eg, coronary artery spasm or embolism, arrhythmia, hypotension)
Should there be a universal definition for myocardial infarction?
A universal definition for myocardial infarction would be of great benefit to future clinical studies in this area since it will allow for trial-to-trial comparisons as well as accurate meta-analyses involving multiple investigations. In clinical trials, myocardial infarction may be an entry criterion or an end-point.
What is the pathophysiology of myocardial infarction?
Myocardial infarction is defined by pathology as myocardial cell death due to prolonged ischemia. Cell death is categorized pathologically as coagulation and/or contraction band necrosis, which usually evolves through oncosis, but can result to a lesser degree from apoptosis.
What is the current diagnosis of acute myocardial infarction?
Thus, the current diagnosis of acute myocardial infarction is a clinical diagnosis based on patient symptoms, ECG changes, and highly sensitive biochemical markers, as well as information gleaned from various imaging techniques.
What are the types of myocardial infarction?
Myocardial infarctions are usually classified by size: microscopic (focal necrosis), small [10% of the left ventricular (LV) myocardium], moderate (10–30% of the LV myocardium), and large (.30% of the LV myocardium), and by location.