Is Myocardial Ischemia Coronary Heart Disease? What is the relationship between the two? A piece of science, don't confuse it anymore
What organ is the most important existence in the human body? Presumably everyone will first think of two words: heart!
That's right, the heart starts its work when you're a tiny fetus. After we are born, it is pulsating every second. The main value of its existence is to apply pressure to the arterial blood vessels through the pulsation, so that the arterial blood vessels can transport blood to various organs in the body. At the same time, the blood pressure after being used will also be Again with venous vasculature recovery.
That is to say, only when the heart is beating normally can the various organs of the human body function normally. Almost all the energy required for cardiac activity comes from aerobic metabolism. Even when the human body is in a completely quiet state, the blood oxygen uptake rate of the heart muscle itself is quite high, even reaching about 70% .
In a completely healthy condition, the body can adjust itself to promote a relatively constant blood supply and demand and maintain the normal work of the heart.
However, due to the susceptibility of certain factors, the imbalance of myocardial blood supply and demand will lead to the existence of myocardial ischemia . Relevant research surveys have shown that the incidence of coronary heart disease in China has gradually increased in recent years, and it has become a common and frequently-occurring disease among middle-aged and elderly people. Some young people aged 20-30 also have myocardial ischemia. performance .
However, in real life, many people will immediately think of coronary heart disease when they hear myocardial ischemia, and even directly equate the two.
So the question is, is myocardial ischemia the same as coronary heart disease? What is the relationship between the two?
First of all, the so-called coronary heart disease is actually an abbreviation for coronary heart disease, which does not mean that the heart itself has lesions.
It is the coronary artery that originally supplied normal blood to the myocardium. It is affected by genetics, age, three high diseases, unhealthy diet and living habits . The arterial endothelium is gradually damaged and develops into atherosclerosis , resulting in coronary lumen . It becomes more and more narrow , affecting the normal blood supply of the heart muscle, and eventually causing the attack of coronary heart disease.
This means that coronary heart disease itself is an ischemic heart disease, which is the main and most common cause of myocardial ischemia. However, myocardial ischemia is not the same as coronary heart disease, because it refers to a pathological state in which the blood attention of the heart is reduced, resulting in reduced cardiac supply, abnormal myocardial energy metabolism, and unable to support the normal work of the heart.
There are many causes of myocardial ischemia, and coronary heart disease is just one of them. In addition, decreased blood pressure, decreased blood supply to the aorta, or coronary artery blockage, etc., may cause myocardial ischemia.
In addition, heart valve disease, blood viscosity changes, myocardial disease itself, etc., will also affect the normal blood supply of the myocardium. In addition, some inflammations (rheumatic diseases, syphilitic diseases, Kawasaki disease), connective tissue diseases, trauma or congenital malformations, etc., can cause myocardial ischemia.
Of course, among these factors, the most common one is coronary atherosclerosis, which not only causes myocardial ischemia, but is also the basis for coronary heart disease and myocardial infarction .
Epidemiological studies have found that important risk factors associated with coronary atherosclerosis include hyperlipidemia, hypertension, diabetes, smoking and drinking, obesity, and increasing age .
In a word, the typical symptom of coronary heart disease is myocardial ischemia, but myocardial ischemia is not necessarily the signal of the arrival of coronary heart disease, there is actually a certain difference between the two.
However, in most cases, myocardial ischemia may be an early warning of coronary heart disease. Patients should pay attention to it, and it is necessary to find the cause and actively regulate it.