What is myocardial ischemia? What is myocardial ischemia?

Myocardial ischemia refers to a pathological state in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal myocardial energy metabolism, and inability to support the normal work of the heart. Coronary artery stenosis or occlusion caused by coronary atherosclerosis is the most important and common cause of myocardial ischemia, which in turn leads to myocardial ischemia and hypoxia, and the resulting heart disease is often referred to as "coronary heart disease", so coronary heart disease is the "culprit" of myocardial ischemia. Myocardial ischemia seriously endangers the health of middle-aged and elderly people, in recent years, with the improvement of living standards, coronary atherosclerosis shows a trend of younger people, and some young people aged 20-30 also have myocardial ischemia.

What about myocardial ischemia?

Myocardial ischemia is an umbrella term for a large group of diseases due to various causes. Common causes include coronary artery stenosis, cardiomyopathy, valvular disease, malignant arrhythmias, congenital heart disease, and many more. Common clinical manifestations of myocardial ischemia include chest tightness, chest pain, cough, breathlessness, gastrointestinal congestion, and palpitation.

** is mainly for ****, such as caused by coronary atherosclerosis, the use of anti-platelet aggregation drugs, and lipid-regulating drugs. If it is caused by cardiomyopathy, it is given to correct heart failure, prevent and treat arrhythmia, reduce the load on the heart, etc.

When you have free time, you can browse more popular science knowledge in this area. These popular science knowledge are all learned from the [Cardio-Cerebral Disease Friends Association] that I paid attention to not long ago, and I will share some disease knowledge of cardiovascular and cerebrovascular diseases and the three highs every day, which feels very good.

Myocardial ischemia refers to a pathological condition in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal myocardial energy metabolism, and inability to support the normal work of the heart. The energy required for heart activity is almost entirely provided by aerobic metabolism, so even in quiet times, the blood oxygen uptake rate of the myocardium is very high (about 70%), and under normal circumstances, the body can regulate itself to promote a relatively constant blood supply and demand, so as to ensure the normal operation of the heart. When there is an imbalance between the supply and demand of myocardial blood for some reason, it constitutes myocardial ischemia in the true sense.

Coronary heart disease is the main and most common cause of myocardial ischemia. With the improvement of people's living standards, the prevalence of myocardial ischemia in China is increasing year by year, and has become a common and frequent disease among middle-aged and elderly people, and some young people aged 20 to 30 also have myocardial ischemia.

Myocardial ischemia is not strictly a disease, but a pathophysiological state.

Myocardial ischemia is due to narrowing of the coronary arteries (mostly due to atherosclerosis).

caused), coronary artery spasm.

The pathophysiological state of insufficient blood supply and oxygen supply to the myocardium caused by coronary embolism.

Myocardial ischemia can affect the pumping contractile and diastolic function of the heart, so if the patient finds myocardial ischemia on examination, or feels that there are manifestations of myocardial ischemia, he should actively accept it** to prevent the disease from progressing.

What are the types of myocardial ischemia?

Myocardial ischemia is a pathophysiological process of heart disease, if it develops into ischemic heart disease.

Coronary heart disease. stage, which can be divided into five types. They are occult or asymptomatic coronary heart disease and angina.

Myocardial infarction. Ischemic cardiomyopathy. and sudden death.

One is that symptoms of chest tightness, palpitations, and shortness of breath will occur during a lot of physical activity, but they can be relieved by resting for a while.

Second, when tired or nervous, the patient will have dull pain in the retrosternal or precordial area, or constriction-like pain, and may also radiate to the left shoulder and upper arm, the pain is continuous, the time is not very long, and it can be relieved by itself after resting for a while, and some patients often sweat a lot.

The third is that the patient has symptoms of chest pain and tightness after eating, cold, and drinking.

Fourth, when the pillow is relatively low when the patient sleeps, he feels chest tightness and breathlessness, and prefers to sleep on a high pillow; Sudden onset of chest pain, heart palpitations, or difficulty breathing while asleep or lying flat during the day must be relieved immediately by sitting up or standing.

In addition, most patients will have unexplained tiredness, lack of energy, severe myocardial ischemia patients will have sudden bradycardia, blood pressure drop, and even syncope.

It is recommended that you do an electrocardiogram (ECG) so that you can confirm whether it is myocardial ischemia or not, and then you can prescribe the right medicine. The following is the concept of myocardial ischemia as well as its symptoms. Myocardial ischemia, simply put, myocardial ischemia is a symptom caused by the narrowing of the blood vessels of the nourishing heart, which makes the blood and nutrients working of the heart insufficient.

Myocardial ischemia is generally seen in coronary heart disease, which is due to insufficient blood supply to the myocardium after coronary arteriosclerosis leading to narrowing of blood vessels, usually manifested as chest tightness, pain in the precordial area, and a feeling of compression. In severe cases, it may lead to myocardial infarction and heart failure. Generally, an electrocardiogram (ECG) can be preliminarily diagnosed, but coronary angiography is required to confirm the diagnosis.

This does not mean that the symptoms are gone, and when there are severe symptoms, it usually means that there may be a myocardial infarction.

Myocardial ischemia refers to the lack of blood flow in myocardial perfusion, or the blood flow of perfusion is sufficient, but the relative cardiac tissue ischemia is caused by excessive oxygen consumption, which is called myocardial ischemia. The main cause of myocardial ischemia is coronary atherosclerotic cardiovascular disease, but in addition to coronary atherosclerotic cardiovascular diseases, such as vasculitis, inflammatory changes can also cause myocardial ischemia. There are also lesions of tiny blood vessels caused by any cause of the heart, such as diabetes or cardiomyopathy, where there are lesions of tiny blood vessels, and there will also be insufficient myocardial perfusion, also known as myocardial ischemia.

There are also myocardial conditions and vascular conditions, but the overall blood volume is insufficient, the blood pressure is relatively low, and the diffuse perfusion of the entire myocardium will be very poor, or in the state of very low blood oxygen, the perfusion of the myocardium will be relatively insufficient, and myocardial ischemia will also occur.

We may not have a clear concept of myocardial ischemia, but we know that myocardial ischemia is very serious, it can cause patients to have symptoms such as palpitation, chest tightness, palpitations, etc., and in severe cases, it may lead to death. So, what does myocardial ischemia mean? What causes myocardial ischemia?

Let's find out!

1. What is myocardial ischemia?

The most common cause of myocardial ischemia is coronary atherosclerotic heart disease, referred to as coronary heart disease, which refers to the atherosclerosis of the coronary arteries that supply blood to the heart, resulting in official stenosis, myocardial ischemia, hypoxia, mild cases can have no symptoms, chest tightness, chest pain, breathlessness and other symptoms, severe cases of myocardium can occur due to ischemia, hypoxia and necrosis, called myocardial infarction.

2. Factors related to myocardial ischemia

Lipids in the blood, such as low-density lipoprotein cholesterol and very low-density lipoprotein cholesterol, can be deposited in the blood vessel wall, and long-term development will lead to official cavity stenosis, myocardial ischemia, hypoxia, chest tightness, breath-holding, chest pain and other symptoms, which is coronary heart disease.

3. Phenogen

Hypertension, hyperlipidemia, diabetes, smoking, drinking, obesity, and high-fat diet will all promote the occurrence of coronary atherosclerosis, so patients with hypertension, diabetes, and hyperlipidemia must control blood pressure, blood sugar, blood lipids, quit smoking, abstain from alcohol, eat less fried food, eat less fatty meat, eat more green leafy vegetables, and exercise more.

4. Conditioning methods

1) Patients with myocardial ischemia must follow the principles of low-fat, low-salt, and light diet in their diet, including the selection of ingredients, cooking methods, and meal time. In the choice of ingredients, try to avoid fatty meat and other high-fat ingredients, and fresh fruits and vegetables, such as sweet potatoes, carrots, tomatoes, etc. are better ingredients. When cooking, try to use steaming or boiling methods, avoid frying, and use vegetable oil instead of animal oil if you want to fry.

It's best to eat at the right time, don't worry about being hungry, and don't overeat.

2) In addition to dietary conditioning, how to regulate myocardial ischemia? Life conditioning is also important. Patients with myocardial ischemia should pay attention to developing a good routine of work and rest, go to bed early and get up early, ensure rest, and avoid fatigue.

Also pay attention to regulating mood and emotions, maintain a cheerful mood, and avoid excessive ups and downs of emotions. Moderate exercise is very helpful in enhancing blood circulation and preventing and controlling myocardial ischemia caused by blockage of blood vessels. But be careful not to do too strenuous exercise, you can choose walking, yoga, tai chi and other milder exercises.