What causes a heart attack? What are the manifestations?

The most common cause of myocardial infarction is coronary heart disease, myocardial infarction. Patients with myocardial infarction often have retrosternal squeezing pain, or pain in the precordial area, which often radiates to the left shoulder and left arm, accompanied by chest tightness, sweating, dyspnea, and a sense of impending death.

The state of the blood is not good. In normal times, there will be dizziness, nausea, and even fainting, and the heart will make a sudden sound, angina, palpitation, once this situation occurs, you should go to the hospital as soon as possible.

The causes of myocardial infarction are more comprehensive, such as: heart disease, coronary heart disease and high cholesterol can cause the occurrence of myocardial infarction, and the manifestations of myocardial infarction often include angina, dizziness, and even fainting.

Coronary atherosclerosis is the leading cause of myocardial infarction.

Myocardial infarction refers to the blockage of the blood vessel lumen caused by thrombosis or plaque in one or several coronary arteries on the heart, the blood flow stops, and the blood supply to the distal myocardium stops, which in turn leads to ischemic and hypoxic necrosis of the distal myocardium.

Extended Materials. To put it simply, the heart is like a field of crops, the coronary arteries are like irrigation pipes, and myocardial infarction means that the irrigation pipes are blocked, and the water cannot be sent to the distant fields, and the distant crops will dry up and die due to drought. Crops do not need constant irrigation, but cardiomyocytes need constant blood nourishment, and if they become ischemia, they will die within minutes.

In the event of a myocardial infarction, the best method is, of course, to relieve the obstruction in the shortest time, open the blood vessels, minimize the ischemia time, and minimize the number of myocardial cell deaths. Therefore, in the event of myocardial infarction, the patient should be sent to the hospital as soon as possible, and the blood vessels should be opened as soon as possible, and there are two main ways to open the blood vessels: thrombolysis and intervention**.

Thrombolysis, as the name suggests, is to dissolve blood clots, so thrombolysis can only achieve the best goal if there is a large number of blood clots, and for cases with only a small number of blood clots, thrombolysis has little effect.

Cardiac muscle (cardiacmuscle) is a type of muscle tissue made up of heart muscle cells. Cardiomyocytes are basically similar in structure to skeletal muscle, with horizontal striations. Cardiomyocytes in a broad sense include specially differentiated cardiomyocytes that make up the sinus node, intraatrial tract, atrioventricular junction, atrioventricular bundle (i.e., Hiss bundle), and Purkinje fibers, as well as general atrial muscle and ventricular myocardial working cells.

The first 5 make up the cardiac pacing conduction system, which contains little or no myofibrils and therefore has no systolic function. However, they are autonomic and conductive and are the functional basis for the autonomic activity of the heart; The latter two are contractile and are the functional basis of cardiac contractile activity.

The common causes of myocardial infarction are as follows: 1. Coronary thrombosis: the sudden interruption of coronary artery blood flow is mainly due to the instability and rupture of coronary artery plaques under certain inducements, forming local thrombosis, completely blocking blood vessels and causing myocardial infarction. 2. Thrombus detachment:

That is, the blood clot does not form in the coronary artery, but embolizes the coronary artery after it falls off, such as myocardial infarction caused by atrial thrombus detachment in patients with atrial fibrillation; 3. Leukemia cell mass: the patient has too many abnormal cells in the blood system, and the cell mass is partially blocked by the coronary artery; 4. Endocarditis vegetation shedding: blockage of coronary arteries causes myocardial infarction; 5. Others:

For example, severe infection and shock, the patient's myocardium is overburdened, which may also cause local myocardial necrosis.

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, so it is necessary to maintain good lifestyle habits and strengthen exercise in life.

In life, we must maintain good living habits, do not work overtime, do not stay up late, do not 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 the exercise, and do not stay up late.

1. With the increase of age, the coronary artery opening begins to atrophy, the elasticity decreases, at this time, if you bear too heavy physical labor, especially weight-bearing stairs, etc., continuous nervous exertion will make the heart burden suddenly increase, myocardial oxygen demand increases, and the coronary arteries that have been hardened can not meet the myocardial oxygen demand, and eventually lead to myocardial ischemia and myocardial infarction.

2. Many elderly people with myocardial infarction are prone to overeating, and after eating a large amount of high-fat and high-calorie food, the blood concentration suddenly increases, resulting in an increase in blood viscosity, increased platelet aggregation, and the formation of thrombus on the basis of coronary arteries, causing acute myocardial infarction.

3. Constipation is one of the common diseases of the elderly and even middle-aged people, no matter what the cause of constipation is, who causes the patient to exert defecation while causing the intravascular blood pressure to rise, and the vascular plaque and the base block fall off, resulting in the occurrence of myocardial infarction.

4. We all know that a lot of smoking and drinking alcohol are important factors that harm the health of the body, whether it is nicotine in cigarettes or alcohol in alcohol, long-term smoking will cause a lot of damage to blood vessels, making them harden in advance and lose their elasticity, and eventually lead to the occurrence of myocardial infarction.