Heart attack - part of the ossification developed in the body as a result of termination or violation of local blood circulation. Causes of heart attack can be thrombosis (see), embolism (see) or long spasm of the arteries supplying this site. A heart attack occurs only if the artery is not enough anastomoses (see) with neighbouring arteries. The shape of a heart attack depends on the branching of blood vessels in the body.
In the kidneys, spleen and lung infarction has the form of a cone, a converted basis to the surface of the body; in the heart, intestines shape of a heart attack incorrect.
The size of the infarct depend on the calibre of the struck vessel. There are white (anemia) and red (hemorrhagic) heart attacks. Anemic heart attacks whitish-gray observed in the kidneys and spleen. Hemorrhagic blackish-red heart attacks occur in the lungs, where infarction zone occurs hemorrhage.
Fig. 1. White heart attacks spleen.
 Fig. 2. Red heart attacks easy. |
The outcome of a heart attack depends on the location, size, conditions of education. Under favorable for around a heart attack develops inflammation, dead tissue dissolve, replaced by granulation tissue with subsequent scarring. When a heart attack resulting from vessel closure septic embolus, in the zone of necrosis occurs purulent fusion. In this regard, in place of a heart attack may form an abscess, and suppuration can spread to the surrounding tissue. A heart attack can nanaitsy and secondary infections; it often happens in the lung. The most frequent myocardial infarction (see).
