What is myocardial infarction PDF?

Abstract. Myocardial infarction is a term applied to myocardial necrosis secondary to an acute interruption of the coronary blood supply. Atherosclerosis is by far the most common cause of myocardial infarction. According to the INTERHEART study report, nine factors are responsible for 90% of myocardial infarctions.

What is the main cause of a 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 3 common complications of a myocardial infarction?

Complications of MI include arrhythmic, mechanical, and inflammatory (early pericarditis and post-MI syndrome) sequelae, as well as left ventricular mural thrombus (LVMT) (see the following image).

What is a Type 3 myocardial infarction?

The type 3 myocardial infarction was defined according to the Universal definition of myocardial infarction, that is, cardiac death with symptoms suggestive of myocardial ischemia and presumed new ischemic ECG changes or new left bundle branch block, but death occurring before blood samples could be obtained, before …

What happens during a myocardial infarction?

Overview. A heart attack (myocardial infarction) happens when one or more areas of the heart muscle don’t get enough oxygen. This happens when blood flow to the heart muscle is blocked.

What are the five types of myocardial infarction?

Five Types of MI Will Make Up New Definition

  • A primary coronary event, such as plaque rupture or dissection.
  • A problem of oxygen supply and demand, such as coronary spasm, coronary embolism, arrhythmia, anemia, or hypotension.

What is Type 1 and Type 2 MI?

Type 1 MI is a primary coronary arterial event attributable to atherothrombotic plaque rupture or erosion. Type 2 MI occurs secondary to an acute imbalance in myocardial oxygen supply and demand without atherothrombosis.

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