What is an infarction?

An infarction is specifically defined as the formation of a necrotic area due to a lack of blood supply to a particular tissue or organ. This condition occurs when blood flow is obstructed, which can be due to various reasons, such as a blood clot or an embolism. As a result, the tissue becomes deprived of oxygen and nutrients, leading to cell death and necrosis in that area.

Understanding this definition is crucial for recognizing the importance of blood circulation in maintaining tissue health and the potential consequences when that circulation is impeded. In medical contexts, infarctions are often discussed in relation to conditions like myocardial infarction (heart attack) or cerebral infarction (stroke), both of which highlight the critical nature of timely and effective blood supply for tissue survival and function.