What is a chronic myocardial infarction?
Myocardial ischemia occurs when blood flow to the heart muscle (myocardium) is obstructed by a partial or complete blockage of a coronary artery by a buildup of plaques (atherosclerosis). If the plaques rupture, you can have a heart attack (myocardial infarction).
What is the difference between chronic and acute myocardial infarction?
Acute myocardial infarction was defined as occurring less than 30 days, subacute as occurring between 30 days and 1 year, and chronic as occurring more than 1 year since the initial presentation of the patient with acute coronary syndrome.
Which model is apt for studying myocardial infarction?
Ac- cordingly, the rabbit heart has long been used as a model for studying myocardial ischemia and infarction (6, 11, 14, 18, 21). In all models of cardiac disease, understanding coro- nary anatomy is crucial to standardize surgical techniques and increase animal-to-animal reproducibility.
What is chronic myocardial injury?
Chronic myocardial injury is characterized by a cTn result greater than the 99th percentile value without a rise and/or fall over a period of serial measurements (e.g., more than eight hours).
How is MI diagnosed?
Acute myocardial infarction is myocardial necrosis resulting from acute obstruction of a coronary artery. Symptoms include chest discomfort with or without dyspnea, nausea, and diaphoresis. Diagnosis is by ECG and the presence or absence of serologic markers.
What is the pathophysiology of myocardial infarction?
In the clinical context, myocardial infarction is usually due to thrombotic occlusion of a coronary vessel caused by rupture of a vulnerable plaque. Ischemia induces profound metabolic and ionic perturbations in the affected myocardium and causes rapid depression of systolic function.
Who discovered myocardial infarction?
James B. Herrick
| James Herrick | |
|---|---|
| Alma mater | University of Michigan Rush Medical College |
| Known for | Sickle-cell disease Myocardial infarction |
| Scientific career | |
| Fields | Medicine |
https://www.youtube.com/watch?v=lT6sGV6YkDw