Can anyone tell me what is the difference between angina pectoris and myocardial infarction?

1.Angina pectoris is a clinical syndrome with episodic chest pain or chest discomfort caused by coronary insufficiency, acute, temporary ischemia and hypoxia of myocardium. It is characterized by paroxysmal anterior chest squeezing pain, which may be accompanied by other symptoms, mainly posterior to the sternum, radiating to the precordium and left upper extremity, often during exertion or emotional agitation.

2.Myocardial infarction refers to the avascular necrosis of the myocardium, which is a sharp reduction or interruption of the blood flow of the coronary arteries on the basis of coronary artery lesions, so that the corresponding myocardium has severe and lasting acute ischemia, and eventually leads to avascular necrosis of the myocardium.

One is coronary insufficiency, the other is myocardial avascular necrosis, but generally speaking, it is cardiac ischemia, one blood vessel is insufficient, and the other is myocardial ischemia.

Angina pectoris has the following two characteristics:

1.Systolic colic in the precordial area does not last more than 15 minutes;

2.The colic is quickly relieved after sublingual administration of acid-glycerin tablets.

Acute myocardial infarction has the following four characteristics:

1.Precordial colic is more intense, unbearable, often accompanied by irritability;

2.Colic lasts more than 15 minutes, some up to half an hour or more;

3.angina does not decrease after rest;

4.Colic does not relieve after sublingual nitroglycerin tablets. Once the patient has myocardial infarction, he should immediately go to the hospital for diagnosis and treatment without delay.

From the perspective of pain time, angina pectoris is short and can be relieved with medication or rest, but myocardial infarction pain is long and intense, and medication cannot relieve it or the relief is slow.

From the point of view of lesion loss, angina pectoris does not have significant damage to the myocardium, whereas myocardial infarction is avascular necrosis of the myocardium and is more difficult to recover from.

From a laboratory point of view, myocardial infarction has enzymatic changes.

Angina pectoris is caused by transient ischemia of the heart muscle, but if it is too long, it can cause necrosis of the heart muscle, which is called myocardial infarction. The difference between the two is that the duration of pain is not the same - angina pectoris, which can be relieved after resting after about a few minutes, can be relieved by taking nitroglycerin, but myocardial infarction will take more than 30 minutes, and eating nitroglycerin does not relieve the ECG. If myocardial infarction is suspected, it is important to go to the hospital as soon as possible, as acute myocardial infarction has a high mortality rate.

It should be diagnosed correctly and correct**. There is a big difference between the two, and angina pectoris can develop into myocardial infarction under certain circumstances.

Angina pectoris is relieved by oral nitrates for 5-10 minutes.

If the heart attack does not go away, it may be a heart attack if it lasts for 30 minutes.

The pain of angina pectoris and myocardial infarction is very severe, and the pain is generally unbearable, and it lasts for a long time, and may be accompanied by shock, heart failure, and arrhythmia, which is very dangerous.

Frequent heartache, inability to do strenuous exercise, frequent palpitations, frequent heart palpitations, these are all characteristics.

1. Angina pectoris: Angina pectoris refers to a clinical syndrome of acute and temporary ischemia and hypoxia of the myocardium caused by the increase of myocardial load on the basis of coronary artery stenosis.

Myocardial infarction: Myocardial infarction is due to atherosclerosis of the coronary arteries, resulting in the blockage of the lumen of the coronary arteries, which interrupts the blood, and the corresponding myocardium cannot get the blood, resulting in severe ischemia and necrosis of the myocardium.

2. Angina pectoris: angina pectoris mainly occurs after the upper sternal body is interrupted, and can affect the precordial area, the boundary is not very clear, and often radiates to the left shoulder, the inner side of the left arm to the ring finger and little finger, or to the neck, pharynx or jaw.

Myocardial infarction: myocardial infarction usually occurs in the area innervated by the anterior descending coronary artery, followed by the area innervated by the right coronary artery, and the area innervated by the circumflex branch of the left coronary artery, not involving the anterior thoracic region.

3. Angina pectoris: angina pectoris is often accompanied by compression, contraction, and burning sensation, but it is not very sharp, unlike needle prick or knife cutting pain, occasionally accompanied by a sense of impending death, and the patient often unconsciously stops the original activity during the attack.

Myocardial infarction: severe pain, mostly accompanied by nausea, vomiting, dizziness and other symptoms, fear or a sense of impending death, and in severe cases, hypotension and even shock.

4. Angina pectoris: Angina pectoris is commonly caused by overwork, emotional agitation, full meals, cold, smoking, drinking, and anemia.

Myocardial infarction: The cause of myocardial infarction is often subtle, and often occurs when it is quiet.

There is a difference between myocardial infarction and angina, which is mainly manifested in the following aspects. 1. The pain of myocardial infarction and angina pectoris is the same, but its pain will be more severe and last longer. Second, the ECG of myocardial infarction will have a typical pattern of evolution, but angina pectoris is only the ST segment depressed or elevated.

Thirdly, the symptoms of myocardial infarction cannot be relieved by taking nitroglycerin, while angina pectoris will be relieved rapidly. Fourth, fever and an increase in white blood cells in the peripheral blood picture or erythrocyte sedimentation rate occur during a myocardial infarction, but angina pectoris does not. Fifth, myocardial infarction is prone to severe arrhythmias, cardiogenic shock, or heart failure, whereas angina does not.

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.

Hello, the difference between angina pectoris and myocardial infarction: the location, nature, radiation, and area of pain in myocardial infarction are similar to those in angina. It differs from angina pectoris in the following ways:

Usually occurs at rest with no obvious immediate precipitating factors. The duration of pain is significantly longer than that of angina, mostly 1 2 hours, and can last up to 4 hours or even several days. The nature of the pain is mostly oppressive, severe and unbearable.

Rest and sublingual nitroglycerin do not relieve pain easily and often require a strong anesthetic or analgesic. The pain is usually in the chest or back, but it is more extensive, often involving the entire precordial area, and the radiation is not obvious. It is often accompanied by irritability, cold sweats, fear, and even a sense of impending death.

It is often accompanied by myocardial necrosis such as fever, elevated total white blood cell count, elevated erythrocyte sedimentation rate, and elevated serum enzymes. Has specific ECG changes. I hope you find my answer helpful and I wish you good health and happiness.