Myocardial ischemia is a pathological state, while coronary artery disease is one of the heart diseases. The two are indeed related, but they should never be equated, as patients with coronary artery disease have a high chance of having myocardial ischemia, while myocardial ischemia is not necessarily coronary artery disease. What do I mean by myocardial ischemia? As I said at the beginning, myocardial ischemia is a pathological state, and since it is a state, it means that many causes can lead to it, and coronary artery disease is only one of the most common among many causes. It is like the state of exertion, which is not unfamiliar to any living creature, the most common one is the exertion caused by doing too much physical work, but in fact we may feel exertion caused by staying up late, exertion caused by reading books carefully, or even exertion caused by lying down for too long. The full meaning of myocardial ischemia is “myocardial tissue will, for some reason, can not get sufficient blood perfusion, which affects the normal work of several organs”, to know that the heart can always be beating work, all rely on continuous adequate blood oxygen, normal human blood supply has been in a balance, although not constant But with the help of the body’s own regulation, it can reach a relative balance and work normally. Most people associate it with coronary heart disease because the full name of coronary heart disease is “coronary atherosclerotic heart disease”, the patient’s blood vessels have multiple narrowings, which will affect the normal flow of blood, the amount of blood that can reach the heart muscle is therefore reduced, and then myocardial ischemia will occur. So what is the possible cause of myocardial ischemia? Since myocardial ischemia is the inability of blood supply to meet myocardial consumption, then in addition to the problem of supply, there is another possibility, that is, consumption becomes more, although our heartbeat is not constant speed, but usually has been in a certain range, if we carry out a lot of high-intensity exercise in a short period of time, we will find that the heart rate is getting faster and faster, shortness of breath is good, which is actually the consumption of blood oxygen becomes more, the heart overload work Increase the embodiment of blood oxygen supply, if this consumption is far more than the amount that it can bear, there will be myocardial ischemia, but this may not be called pathological, unless there is a milder coronary stenosis itself. Patients with coronary artery disease develop myocardial ischemia because of coronary stenosis, but a more similar condition exists clinically, and that is coronary spasm. Coronary stenosis is due to the formation of plaques under the walls of blood vessels because of advanced age and other reasons; while coronary spasm is mainly due to the cause of nerve disorder stimulation and spasmodic contraction in the blood vessels as a whole, which is more dangerous and will not only cause myocardial ischemia as well, but also accelerate the formation of plaques. There are two possible causes of nerve disorders, one is caused by sudden changes in emotional and mental factors, and such patients are often attributed to vegetative disorders and cardiac neurosis, which are short-lived and most patients can return to normal after self-regulation; the other is spinal lesions, that is, herniation, hyperplasia, rotation, and other lesions caused by compression and stimulation of nerves, and such patients are easily misdiagnosed or ignored. These patients are easily misdiagnosed or overlooked, with both lesions and nerve problems requiring a two-pronged approach, which is more complex than the former. In addition, there are also three high, smoking, alcohol, drugs and other reasons, may lead to patients with myocardial ischemia, and the patient’s symptoms do not explain anything, because when myocardial ischemia exists, these symptoms are common, the patient delay the urgent need to find the cause of myocardial ischemia, rather than blindly worry about fear, when facing the disease can never back off, you are weak it will become stronger, must only Timely seek medical attention to take appropriate treatment measures.