Why do you get myocardial infarction What is myocardial infarction?

What is a myocardial infarction?

Myocardial infarction refers to the avascular necrosis of the myocardium, which is caused by the rapid reduction or interruption of the coronary blood supply on the basis of coronary artery disease, resulting in severe and long-lasting acute ischemia of the corresponding myocardium. The coronary artery is a branch of the ascending aorta, the left coronary artery is thicker than the right coronary artery, the left coronary artery is divided into the anterior descending artery and the circumflex artery, plus the right coronary artery trunk becomes the three major coronary arteries. The coronary artery forms a ring shape because it surrounds the atrioventricular sulcus, and is worn on the heart like a hat (called a crown in ancient times), so it is called the coronary artery.

Normally, blood from the heart**: Left anterior descending coronary artery: blood is given to the anterior wall of the left ventricle and the anterior 2 3 regions of the ventricular septum, left coronary circumflex artery:

**Left ventricular sidewall region; Right coronary artery: **Right ventricle, posterior ventricular septum1 3, and basal portion of the posterior wall of the left ventricle.

Myocardial infarction, which occurs on the basis of coronary atherosclerosis, is a major concern in cardiology, such as hyperlipidemia, abnormal blood glucose, and high blood pressure. However, infection is also closely related to coronary heart disease and myocardial infarction. In addition to respiratory disease, Chlamydia pneumoniae can also be combined with other factors to cause coronary heart disease.

Therefore, if coronary heart disease is diagnosed, it is also recommended to check for Chlamydia pneumoniae infection. Because epidemiological investigations have confirmed that Chlamydia pneumoniae infection is also closely related to atherosclerosis, coronary heart disease, and myocardial infarction.

The name of the disease is myocardial infarction, not myocardial infarction.

The most common cause of myocardial infarction is coronary atherosclerosis, coronary arteries are the nutritional tubes of the heart, simply put, after coronary atherosclerosis, the lumen of the blood vessels narrows, blood flow is reduced, and the heart cannot effectively provide nutrients, and myocardial cells have infarction.

Basically**, coronary atherosclerosis (occasionally caused by coronary embolism, inflammation, congenital malformations, spasticity, and obstruction of the coronary ostium), resulting in narrowing of the lumen of one or more vessels and insufficient blood supply to the myocardium, while collateral circulation is not fully established.

The factors that induce myocardial infarction include bad lifestyle habits, constipation and drug factors, etc., which are very easy to induce myocardial infarction in life, especially bad living habits, staying up late for a long time, or smoking a lot, or drinking a lot of strong coffee, these bad habits may induce the acute occurrence of myocardial infarction.

Maybe many of us will always hear all kinds of information in our lives, such as what reason a certain star induces myocardial infarction and eventually dies, in fact, in life, many of us often work a lot of overtime, or keep staying up late, or constantly drink a lot of strong coffee in the process of staying up late, in fact, these factors will directly induce myocardial infarction and death to a large extent, and constipation will also directly lead to induce myocardial infarction. This is the result of a large number of clinical studies, and this is a very important factor, so it must be avoided in time.

The reason why many elderly people will have myocardial infarction in their lives also includes acute myocardial infarction caused by the shedding of atheroma after emotional agitation, so patients with heart disease must not have any emotional agitation in life, and must keep themselves calm enough and not let themselves be too excited, of course, there are many drug factors that can also lead to the occurrence of myocardial infarction, such as the use of some cold medicines containing ephedrine, This drug can cause sympathetic overexcitation and tachycardia, which causes myocardial infarction is also very common, and the consequences are also very serious.

In life, we must maintain good living habits, don't work overtime, don't stay up late, don't drink a lot of strong coffee, we must actively maintain our health, no matter how much money we make, there is no way to buy our own health, so we must always keep in mind that we must strengthen exercise and don't stay up late.

Introduction to the causes of myocardial infarction:

1. Complete occlusion of coronary arteries.

The occurrence of acute myocardial infarction depends on the presence or absence of acute myocardial infarction.

Coronary atherosclerosis.

Stability of plaques, intraatherotic or subintimal hemorrhage in the lesion atheromatosis, intraluminal thrombosis, or persistent spasm of the arteries, resulting in complete occlusion of the lumen.

2. Decreased cardiac function blood output.

The decrease in cardiac output can also lead to the phenomenon of myocardial infarction, such as shock, dehydration, bleeding, surgery, etc., which are the main reasons for the decline in cardiac output, and the decrease in cardiac output leads to insufficient coronary perfusion and promotes the occurrence of myocardial infarction.

3. Increased myocardial aerobic blood demand.

Heavy physical exertion, emotional agitation, or a sharp rise in blood pressure can lead to an increase in the oxygen demand of the myocardium and a disease in which myocardial infarction occurs.

There are some other willingness for the occurrence of myocardial infarction, such as emotional agitation, massive bleeding, severe arrhythmia, etc. Patients with myocardial infarction should not only be active in the disease, but also pay attention to the prevention and nursing of myocardial infarction to prevent serious complications of myocardial infarction. In daily life, we should pay attention to reasonable rest, and long-term stressful working environment is also easy to cause serious heart disease, and a little carelessness will lead to myocardial infarction.

Early morning is the time period of high incidence of myocardial infarction, everyone should pay attention to prevention, especially the middle-aged and elderly people with myocardial ischemia, and pay more attention to the prevention of myocardial infarction.

Here's what experts say (please refer to): myocardial infarction, also known as myocardial infarction, is one of the common critical diseases in internal medicine due to the rapid occurrence of severe and long-lasting ischemia and myocardial death caused by hypoxia in some myocardium. Pathology of myocardial infarction**:

Platelet aggregation: 90% of patients with myocardial infarction have thrombosis proximal to the artery in the infarcted area, often occurring at the rupture or ulceration of atheromatosis. Coronary atheroplaque collapse is seen in 90% to 100% of patients with acute myocardial infarction. Coronary artery spasm can cause stagnation and blockage of blood flow in the coronary arteries, and then damage the coronary intima, causing rupture and bleeding, so that the content of thromboxane A2, which has strong platelet aggregation and vasoconstriction, is relatively increased in the body, causing platelet aggregation and promoting thrombosis.